Not saying this would happen but what if the #1 seed in the AFC was determined by taking the best 16 games from each team ( can't throw out head to head ), apply the normal tie-break rules including HTH, conference recs and SOS. So all of the Bills & Bengals games would could and KC would lose their worst game (x/c HTH).
There is no guarantee that the Bills will be in the right mindset come this Sunday and this would eliminate totally the impact of the Bills-Bengals game.
Certainly, I am not thinking clearly here ...