On reflection, I've come to the theory that Micah Hyde's injury is why the Bills aren't moving on. There can be other reasons, of course, but I believe that if Hyde hadn't gotten hurt, that alone would have changed many things.
Had Hyde not been injured, he would have been there to knock down the pass to Justin Jefferson; Cam Lewis wouldn't have been playing. This alone makes Bills the #1 seed, with a bye, a win over Jacksonville, and waiting to play the winner of CIN-KC in the AFCCG.
Furthermore, if Hyde isn't hurt, Hamlin isn't playing and never gets hurt against Cincinnati. As a result, even if CIN beat KC in the theoretical matchup above, they wouldn't be coming in here with the motivation of the coin toss, ticket sales, etc. because none of that would've happened. Even more importantly, the Bills would be well rested, not having endured the emotional toll that caused them to run out of gas on Sunday.
The fact that Micah would have played next week had the Bills won on Sunday just makes it even more fascinating.