And Brady was Allen’s QB coach for his two worst interception seasons of his career, excluding his rookie year. Perhaps a change in QB coach is what made the difference for Allen’s interceptions.
The idea that Brady took the Bills offense to a new level is just false since the Buffalo offense has been one of the best for several years now. DVOA ranks by year:
Brady went to Carolina and failed, just like Kellen Moore went to the Chargers and failed. Both coaches got another opportunity with a much better roster, and those rosters got their names added to the HC shortlist.