The Bills defense was never that good to begin with. They padded their stats against bad/average QB's and offenses but when facing a good QB/offense they also struggled in the regular season. It's one of the reasons why I wanted the Bills to move on from Sean and hire Bill. Bill is not only a much better HC then Sean but also a much better DC. His problem was he was a terrible GM and that is what led to his troubles in NE. Also, going from the GOAT to Mac Jones is a massive decline at the most important position. No coach could overcome that.