This case begins with two large-scale warehouse burglaries in October and November of 2011. After a lengthy investigation, David Lazaro Oliva and Rafael Gomez Uranga were indicted in November 2013 in connection with those burglaries and charged with conspiracy to commit interstate transportation of stolen property, in violation of 18 U.S.C. § 371, and aiding and abetting the interstate transportation of stolen property, in violation of 18 U.S.C. §§ 2314 and 2. They were arrested on these charges nearly twenty-three months later, in October 2015. While in the District Court, Oliva and Uranga moved to dismiss the indictment based on a Sixth Amendment speedy trial violation. The motions were referred to a Magistrate Judge, who held an evidentiary hearing and entered a report and recommendation. The Magistrate Judge found that the delay between indictment and arrest was the result of the Government's gross negligence, but she ultimately recommended that the motions be denied. The District Court agreed with the Magistrate Judge's recommendation. Subsequently, Oliva and Uranga pled guilty to the conspiracy charge, retaining the right to appeal the District Court's denial of their motions to dismiss. They do so in this consolidated appeal.
Although the lengthy delay between the indictment and arrest was the result of the Government's negligence, we hold that the *914delay did not amount to a Sixth Amendment violation. Accordingly, we affirm.
I.
On October 23, 2011, a group of men burglarized a SouthernLinc warehouse in Gwinnett County, Georgia. They escaped with a truckload of cellphones valued at $1,789,980. Another group of men attempted a similar burglary of a Max Group warehouse, also located in Gwinnett County, on November 28, 2011.1 This group, however, tripped the warehouse's burglary alarm, causing the police to arrive at the site. Uranga was arrested in his SUV near the Max Group location.2
The FBI opened an investigation into the burglaries on November 21, 2011.3 On or about March 27, 2012, Michael Donnelly, a Gwinnett County Police Department officer serving as an FBI Task Force Officer, was assigned as the sole investigator in the case. This was Donnelly's first time serving as a solo investigator. His expansive investigation involved, inter alia, twenty-five witnesses located across various states, nine suspects, nearly 100 exhibits, shoe-tread analysis, and numerous search warrants. Donnelly's investigation continued until at least June 2013.
Oliva and Uranga were indicted by a federal grand jury on November 25, 2013, about two years after the attempted Max Group warehouse burglary. Donnelly was responsible for locating and arresting the Appellants, but he mistakenly believed that this was the United States Marshals Service's ("USMS") responsibility.4 In or around January 2014, Donnelly realized that nothing was happening with the case and conferred with Josh Thompson, another FBI Task Force Officer who had recently worked with the USMS. Donnelly gave Thompson copies of the arrest warrants and possible locations of the Appellants, and asked Thompson to communicate with the USMS about locating them.
According to Thompson's testimony during the evidentiary hearing before the Magistrate Judge, he called someone from the USMS within a month after conferring with Donnelly and learned that Marshals are not responsible for executing arrest warrants when the FBI controls the case. Then, not more than a month later, in or around February or March 2014, Thompson met with Donnelly to return the warrants, and the two discussed some information. Neither could recall at the evidentiary hearing exactly what was discussed *915when Thompson returned the warrants. Thompson testified, however, that he did not inform Donnelly that the FBI handles its own arrests, and that Donnelly did not ask about FBI procedure or whether the USMS would begin locating the Appellants. Donnelly testified at the same evidentiary hearing that, after this second meeting with Thompson, he was not under the impression that he was responsible for arresting the Appellants. Donnelly never followed up with the USMS about the matter. There was also no communication between Donnelly and the U.S. Attorney's Office concerning the arrests. The Assistant U.S. Attorney who secured the indictment, Karlyn Hunter, left the U.S. Attorney's Office in September 2014 (almost a year after the indictment), and a new prosecutor was not assigned to the case until October 2015 (more than a year thereafter). Donnelly had no contact with the U.S. Attorney's Office during this two-year period.
Donnelly took no further action on the case until late September or early October of 2015, when his supervisor informed him that he, not the USMS, was responsible for locating and arresting the Appellants. Donnelly began searching for them within twenty-four hours after receiving this information. Notably, counsel for the Appellants conceded at oral argument that there was no evidence of bad faith in this case and that the speed with which Donnelly acted after he learned that he was responsible for making the arrests suggested the delay "probably was an honest mistake."5 Uranga was ultimately arrested in the Southern District of Florida on October 9, 2015,6 and Oliva was arrested in the Southern District of New York four days later.
On December 11, 2015, Uranga moved to dismiss the indictment for lack of a speedy trial. Oliva did the same about three months later.
II.
The Sixth Amendment to the United States Constitution provides that "[i]n all criminal prosecutions, the accused shall *916enjoy the right to a speedy ... trial[.]" In light of the "unique policies" underlying the speedy trial right, courts must "set aside any judgment of conviction, vacate any sentence imposed, and dismiss the indictment" if the right is violated. United States v. Villarreal, 613 F.3d 1344, 1349 (11th Cir. 2010).
This Circuit assesses speedy trial claims under the four-factor test derived from Barker v. Wingo, weighing (1) the length of the delay, (2) the reason for the delay, (3) the defendant's assertion of his speedy trial right, and (4) actual prejudice to the defendant. 407 U.S. 514, 530, 92 S.Ct. 2182, 2192, 33 L.Ed.2d 101 (1972); see also Villarreal, 613 F.3d at 1350. The first factor, length of the delay, serves a triggering function: it must first be satisfied for the court to analyze the other factors. Villarreal, 613 F.3d at 1350; see also United States v. Dunn, 345 F.3d 1285, 1296 (11th Cir. 2003). A post-indictment delay exceeding one year is generally sufficient to trigger the analysis. United States v. Ingram, 446 F.3d 1332, 1336 (11th Cir. 2006); United States v. Clark, 83 F.3d 1350, 1352 (11th Cir. 1996). Importantly, if the first three factors "weigh heavily against" the Government, the defendant need not show actual prejudice, the fourth factor. Ingram, 446 F.3d at 1336. If a defendant proves the length of the delay is sufficient to trigger the Barker analysis, however, that does not necessarily mean that factor weighs heavily against the Government; the two inquiries are separate. See Doggett v. United States, 505 U.S. 647, 651-52, 112 S.Ct. 2686, 2690-91, 120 L.Ed.2d 520 (1992); Villarreal, 613 F.3d at 1350.
A.
As earlier noted, Oliva and Uranga's motions to dismiss were referred to a Magistrate Judge who, in a report and recommendation, recommended that the motions be denied. The Magistrate Judge performed a three-step inquiry: first, she analyzed whether the first three Barker factors weighed against the Government; next, she separately analyzed whether those factors "weighed heavily" against the Government; finally, after concluding that the first three factors did not weigh heavily against the Government, she assessed whether the Appellants could prove actual prejudice, the fourth factor.
In her first step, the Magistrate Judge noted that the Government conceded that the first and third factors, length of the delay and assertion of the right, weighed against it.7 The Magistrate Judge then found that the Government was "grossly negligent" in failing to procure the Appellants' arrests, and accordingly held that the second factor - reason for the delay - also weighed against the Government.
After determining that the first three factors weighed against the Government, the Magistrate Judge next analyzed whether they did so heavily. Drawing upon the two most relevant Eleventh Circuit cases - Ingram, 446 F.3d at 1332, and Clark, 83 F.3d at 1350 - the Magistrate Judge concluded that the length of the delay, though sufficient to trigger the Barker analysis, did not weigh heavily against the Government. In reaching this conclusion, the Magistrate Judge factored in only the post-indictment delay period. Although "inordinate pre-indictment delay"
*917can also weigh heavily against the Government, see Ingram, 446 F.3d at 1339, the Magistrate Judge concluded that the two-year pre-indictment delay here was not "inordinate" given the complexity of Donnelly's investigation.
Finally, since the first three factors did not each weigh heavily against the Government, the Magistrate Judge assessed whether the Appellants could prove actual prejudice. She found that they could not, and she recommended that their motions be denied.
The Appellants objected to the report and recommendation. Oliva contended that the Magistrate Judge should have factored pre-indictment delay into her determination. He also argued, more generally, that the length of the delay weighed heavily against the Government in light of its gross negligence. Uranga, apparently believing that the Magistrate Judge concluded that the reason for - not the length of - the delay did not weigh heavily against the Government, asserted that the Magistrate Judge erred in reaching that conclusion.8
The Government responded, devoting the majority of its brief to supporting the Magistrate Judge's conclusion that the length of the delay did not weigh heavily against it. Unlike Uranga, the Government believed that the Magistrate Judge had concluded that the reason for the delay did weigh heavily against it. Importantly, the Government did not argue against that purported conclusion, but simply acknowledged:
In evaluating the reason for delay, the Magistrate Judge found that the Government was "grossly negligent" in failing to procure the Defendants' arrests and, without stating so explicitly, concluded that this factor weighed heavily against the Government by stating: "[T]he Government's negligence in this case is every bit as culpable as that of the ATF special agent in Ingram."
B.
The District Court adopted the Magistrate Judge's report and recommendation. But, like Uranga, it operated under the assumption that the Magistrate Judge recommended that the motions be denied because the reason for, not length of, the delay did not weigh heavily against the Government.9 The District Court held that because the Appellants did not produce evidence of bad faith by the Government - the delay between indictment and arrest was proven only to result from gross negligence - the reason for the delay did not weigh heavily against the Government.
To support this conclusion, the District Court looked to United States v. Bibb, 194 F. App'x 619 (11th Cir. 2006), which states *918that "`[g]overnment actions [which] are tangential, frivolous, dilatory, or taken in bad faith weigh heavily in favor of a finding that a speedy trial violation occurred.'" Id. at 622 (quoting United States v. Schlei, 122 F.3d 944, 987 (11th Cir. 1997)). Although the Government caused the delay, the District Court held that its conduct could not be characterized as "dilatory," as the Appellants argued, because in context dilatory requires intent. Here, the Government caused only unintentional delay through its negligence; there was no bad faith. The District Court also refused to factor the pre-indictment delay period into its decision, agreeing with the Magistrate Judge that the complexity of Donnelly's investigation justified the delay.
Thus, the District Court held that the first three Barker factors did not each weigh heavily against the Government, and that the Appellants had failed to prove actual prejudice, the fourth factor. The District Court accordingly denied their motions to dismiss.
Oliva and Uranga appealed. On appeal, they do not challenge the District Court's holding that they failed to prove actual prejudice.10 Rather, they argue that the District Court had found that the first and third Barker factors weighed heavily against the Government, and that it erred in holding that the reason for the delay, the second Barker factor, did not weigh heavily against the Government, rendering actual prejudice irrelevant.
First, the Appellants contend that this Circuit's speedy trial right jurisprudence does not require intentional delay or bad faith by the Government. Instead, they maintain that the term "dilatory," as used Schlei (and as later quoted in Bibb) refers both to unintentional and intentional delay. Therefore, they argue that the Government's gross negligence - Donnelly's near-complete inaction, Thompson failing to relay that the USMS was not assigned arrest responsibility, and the U.S. Attorney's Office failing to check on the Appellants' arrest status - weighs heavily against it. The Appellants add that the pre-indictment delay should also have been factored into the Court's analysis, providing more weight to the Government's negligence. See Clark, 83 F.3d at 1353 ("[Our] toleration of negligence varies inversely with the length of the delay caused by that negligence.").
Next and alternatively, the Appellants argue that the Government's attempt to arrest them was so minimal that it cannot be characterized as "diligent" or performed "in good faith," requiring that the second Barker factor weigh heavily against the Government. See United States v. Bagga, 782 F.2d 1541, 1543 (11th Cir. 1986) (noting the Government's "`constitutional duty to make a diligent, good-faith effort' to locate and apprehend a defendant and bring the defendant to trial") (quoting Smith v. Hooey, 393 U.S. 374, 383, 89 S.Ct. 575, 579, 21 L.Ed.2d 607 (1969)). The Appellants maintain that they did not have to prove actual prejudice because, under either theory, the reason for the delay weighs heavily against the Government and the Government conceded that the other two factors, length of the delay and assertion of the right, did so too. Their motions to dismiss, the Appellants argue, should have therefore been granted.
The Government asserts that the delay in the Appellants' arrests was due only to negligence, not bad faith. The District Court thus properly denied the motions, as *919intent or bad faith is required for the second Barker factor to be weighed heavily against the Government. The Government also contends that it never conceded that the length of the delay weighs heavily against it. Although it did concede that the length of the delay was sufficient to trigger the Barker analysis, it did not also concede that the delay's length was so great as to be weighed heavily against it.
III.
A.
Whether the Government violated a defendant's Sixth Amendment right to a speedy trial is a mixed question of law and fact. Villarreal, 613 F.3d at 1349. We review a district court's legal conclusions de novo and its factual findings for clear error. Id.
Here, we are tasked with reviewing the District Court's application of the Barker factors. As noted, the Appellants do not challenge the District Court's finding of no actual prejudice, the fourth factor. And, the Government concedes the third factor, assertion of the right.11 The Government, however, did not concede that the length of the delay weighed heavily against it.12 Thus we address the first two factors, length of the delay and the reason for it. As discussed below, these factors overlap to an extent, so we address them together.
Different reasons for delay are accorded different weights. Barker, 407 U.S. at 531, 92 S.Ct. at 2192. An intentional attempt to delay trial in order to hinder the defense is "weighted heavily against the government." Id. In contrast, a valid excuse, such as a missing witness, justifies reasonable delay. Id. Negligence falls between these two extremes. It is "more neutral" and "should be weighted less heavily" than bad-faith acts. Id. But negligence "nevertheless should be considered since the ultimate responsibility for such circumstances must rest with the government rather than with the defendant." Id. Indeed, "it still falls on the wrong side of the divide between acceptable and unacceptable reasons for delaying a criminal prosecution once it has begun." Doggett, 505 U.S. at 657, 112 S.Ct. at 2693. Our "toleration of negligence varies inversely with the length of the delay" that the negligence causes. Clark, 83 F.3d at 1353. Analyzing the second factor, therefore, overlaps some with the first: the length of the delay impacts our determination of whether the Government's negligence weighs heavily against it.
Two Eleventh Circuit cases involving negligent governmental delay set the parameters of our analysis. In the first case, United States v. Clark, 83 F.3d at 1350, the defendant, Clark, was charged with six counts related to controlled-substance violations and one count of carrying a firearm during a drug-trafficking crime. Id. at *9201351. There was a seventeen-month delay between Clark's indictment and arrest, during which he continually resided in the apartment listed on the arrest warrant. Id. at 1352. A city police officer attempted to locate Clark by visiting his apartment a single time, but no one answered the door. Id. The police department then suspended its efforts to locate Clark, mistakenly believing that the USMS was taking over. Id. Clark was finally arrested while sitting in a college class. Id.
The District Court dismissed the indictment after finding that the first three Barker factors weighed heavily against the Government. See id. at 1354. This Court reversed, reasoning that although the Government was negligent, it did not deliberately cause the delay. Id. at 1353-54. We further reasoned that the seventeen months of negligent Government delay was significantly less than the eight and a half years of such delay found intolerable by the Supreme Court in Doggett v. United States, 505 U.S. at 651-53, 112 S.Ct. at 2690-91, and was close to the fourteen and a half months of negligent Government delay found acceptable by the Fifth Circuit in Robinson v. Whitley, 2 F.3d 562, 568-70 (5th Cir. 1993).13 Id.
The second case, United States v. Ingram, 446 F.3d at 1332, went the other way. In that case, the defendant, Ingram, claimed he was not a convicted felon when applying to purchase a firearm on February 28, 2000. Id. at 1334. The seller submitted Ingram's application to the National Instant Criminal Background Check System, and the application came up "denied." Id. In March of 2000, a special agent with the Bureau of Alcohol, Tobacco, and Firearms began investigating the transaction. Id. In July of that same year, the agent interviewed Ingram at his workplace, where Ingram admitted he was a convicted felon, but inaccurately claimed that his civil rights had been restored. Id. at 1335. During the interview, Ingram gave the agent his home address and phone numbers and told the agent his brother was a police officer. Id. The agent turned in his report and heard nothing for over two years. Id. When the agent checked in with the U.S. Attorney's Office in 2002, he was told Ingram's case had been "misplaced." Id.
Ingram was eventually indicted in October of 2002 - more than two and a half years after his attempted firearm purchase - for making false statements to a firearms dealer in connection with an attempted acquisition of a firearm. Id. The indictment was sealed the same day it was entered and a warrant was issued for Ingram's arrest. Id. The agent made a minimal effort to arrest Ingram. He left some voicemails for Ingram between 2002 and 2004. Id. Ingram returned at least one call in December of 2002 and left his cellphone number and workplace address for the agent to contact him. Id. The agent also drove by Ingram's residence and workplace on several occasions, but did not exit his car. Id. Finally, in July of 2004, the agent called Ingram's workplace and a coworker gave the agent another number at which to reach Ingram. Id. The agent left a message at this new number and Ingram returned his call the next day. Id. Ingram surrendered in court on August 3, 2004. Id.
Ingram moved to dismiss the indictment on speedy trial grounds. The District Court denied the motion, but this Court reversed. We noted that "inordinate pre-indictment *921delay" influences "how heavily post-indictment delay weighs against the Government," and held that the pre-indictment delay in Ingram's case qualified as "inordinate." See id. at 1339. Thus, the nearly two years of post-indictment delay weighed more heavily against the Government in light of the two and a half years of inordinate pre-indictment delay. Id. We also noted that the agent in Ingram, unlike the one in Clark, knew he was the only law enforcement agent responsible for Ingram's arrest; the Government's negligence, we concluded, was overall more egregious than it was in Clark. Id. So, considering the length of the pre- and post-indictment delays, the degree of Government negligence, the simplicity of the crime for which Ingram was indicted, the state of the proof against him when the indictment was entered, and the Government's knowledge of Ingram's whereabouts, this Court determined that the length of and the reason for the delay weighed heavily against the Government. Id. at 1340. We then remanded the case to the District Court with instructions to dismiss the indictment. Id.
B.
Before comparing this case to Clark and Ingram, we address the Appellants' argument that the Government's negligent conduct was "dilatory" and therefore must be weighed heavily against it.
As quoted in Bibb, supra, the precedential language relevant to the Appellants' argument provides that "Government actions which are tangential, frivolous, dilatory, or taken in bad faith weigh heavily in favor of a finding that a speedy trial violation occurred." Schlei, 122 F.3d at 987 (citing United States v. Loud Hawk, 474 U.S. 302, 315-17, 106 S.Ct. 648, 656-57, 88 L.Ed.2d 640 (1986)). They contend that the term "dilatory" does not require intent, and so it covers the Government's negligence. We disagree. The Supreme Court's Loud Hawk case cited by Schlei (which was in turn cited by Bibb) for the above proposition used the word "dilatory" to describe purposeful action. See 474 U.S. at 316, 106 S.Ct. at 656 (noting that there was "no showing of bad faith or dilatory purpose on the Government's part") (emphasis added). Further, dismissing an indictment is an "extraordinary remedy." Villarreal, 613 F.3d at 1349. It is not one to be given to defendants each time the Government's conduct unintentionally causes delay, as the Appellants' interpretation suggests. Finally, Clark and Ingram contemplate that negligence alone can be, but not must be, weighed heavily against the Government depending upon the circumstances. See Ingram, 446 F.3d at 1339; Clark, 83 F.3d at 1353-54.
The District Court found that the Government was grossly negligent, but not that it purposefully caused delay or otherwise acted in bad faith. Nothing in the record indicates that this conclusion - one we view with "considerable deference," Doggett, 505 U.S. at 652, 112 S.Ct. at 2691 - was clearly erroneous.14 The Government's conduct was therefore not purposefully dilatory as the term is used in the pertinent case law. We thus turn to whether the Government's negligence, in light of the length of the delay, was so great as to weigh heavily against it, and we hold that it wasn't.
The relevant length of delay in this case is twenty-three months, the length of the post-indictment delay. The *922two-year pre-indictment delay is not factored into our analysis of whether the first two Barker factors weigh heavily against the Government. Pre-indictment delay is accounted for if it is "inordinate." Ingram, 446 F.3d at 1339. The two and a half years of pre-indictment delay in Ingram, for example, was inordinate given the simplicity of Ingram's crime and of the investigation. See id.; see also Barker, 407 U.S. at 531, 92 S.Ct. at 2192 ("[T]he delay that can be tolerated for an ordinary street crime is considerably less than for a serious, complex conspiracy charge."). In Ingram, the defendant committed a simple crime and the investigation appeared complete more than two years before the indictment. Here, by contrast, the Appellants were convicted of conspiracy for actions involving two separate large-scale burglaries carried out by a number of participants. Further, Donnelly's investigation included twenty-five witnesses located throughout numerous states, nine suspects, almost 100 exhibits, several search warrants, shoe-tread analysis, and more. Donnelly was still collecting pertinent evidence until at least June of 2013, fewer than six months before the Appellants' November 2013 indictments.
Thus, unlike in Ingram, the pre-indictment delay here is not inordinate.15 With the relevant period of delay at twenty-three months, this case is much closer to Clark's seventeen-month delay than to Ingram's combined delay of four and a half years. Moreover, courts outside this Circuit have consistently rejected defendants' arguments that similar delays excuse them from proving actual prejudice.16
The Government's negligence in the case before us is also more akin to its negligence in Clark than in Ingram. Like the investigator in Clark, Donnelly believed that the USMS was responsible for arresting the Appellants. Donnelly made at least a minimal attempt to follow up on the Appellants' arrest by conferring with Thompson, and he remained under the impression that he was not responsible for the arrests. Eventually, once Donnelly realized his mistake, he quickly effectuated the Appellants' arrests. The lack of effort exemplified by the investigator in Ingram was more egregious, as that investigator knew he was solely responsible for Ingram's arrest.
Ultimately, the delay in this case was the result of a convergence of several factors, including: (a) a federal crime being investigated by a state law enforcement officer (albeit a federally-deputized one); (b) who was unfamiliar with federal indictment and arrest procedure; (c) and who was serving as a solo investigator for the very first time; (d) in a case where the prosecutor who secured the indictment left *923the U.S. Attorney's Office and was not replaced on the case for more than a year. Nevertheless, the Government's negligence here is worrisome. Despite his inexperience, Donnelly could have followed up with the USMS, contacted someone in the U.S. Attorney's Office, or reached out to a supervisor during the long period between the time that he conferred with Thompson and later learned that he was responsible for arresting the Appellants. But because the negligence in this case is weaker than that in Ingram - though perhaps only slightly - and because the relevant length of delay is less than half of Ingram's, we conclude that neither the length of the delay, nor the reason for it, weigh heavily against the Government. The Government's good-faith attempt to arrest the Appellants was diligent enough to avoid warranting the "extraordinary remedy" of dismissing their indictments. See Villarreal, 613 F.3d at 1349.
IV.
In sum, two of the first three Barker factors do not weigh heavily against the Government. The Appellants therefore must prove actual prejudice, which they did not do below and do not attempt to do here. Accordingly, we affirm the District Court's denial of their motions to dismiss.
AFFIRMED.