I don’t think he’s a branch off Payton’s coaching teee. He was TE coach in Miami for like four years and was Interim HC. He coached under Mike Sherman, as well as a year under Brian Daboll, the Bills OC, in Miami as well as Bill Lazor, whose the Bears OC now. And he was brought in by Peyton to coach the TEs, as well as be ‘assistant HC’.
Not sure if he brings anything innovative to the Lions. Seems like a guy whose success will be completely predicated on the coordinators he picks, because I don’t think he’s calling any plays or providing team input into the offense.