Ex-Bengals assistant key to Joe Burrow's rise has joined the enemy

Tennessee Titans head coach Brian Callahan calls a play during the first quarter at Nissan Stadium in Nashville, Tenn., Sunday, Dec. 15, 2024. | Denny Simmons / The Tennessean / USA TODAY NETWORK via Imagn ImagesThe 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'…