The apex of the Cincinnati Bengals' Joe Burrow era came when Brian Callahan was on Zac Taylor's staff as the offensive coordinator. All that success begot a head coaching opportunity with the Tennessee Titans that Callahan couldn't pass up.
Unfortunately, things have gone sideways for Callahan and the Bengals ever since. He flamed out in Tennessee's smoldering dumpster fire of an organization. Cincinnati hasn't made the playoffs since Callahan's exit.
Although much of the Bengals' woes are related to the defense, Callahan's final year with the team was that Linsanity Jake Browning run. Looks even better given how badly Browning played in 2025.