Because Vegas is in the pacific time zone, the home game vs KC has to be at 425 pm on January 8th. The NFL will undoubtedly have Buffalo & Cincinnati hosting NE/Bal respectively at the same time. That is to avoid a potential scenario where KC would rest starters knowing A) They have the 1 seed locked up B) They are 2/3 seed and can't move up or down. It's all about ratings. The SNF game on 8th will likely be Titans/Jags for the south.
Cincinnati has to win out in order to get the 1 seed. While having KC drop a game. Cincinnati could beat Buffalo on the 2nd, yet still end up as a WC. This would include Buf & KC winning the finales, Baltimore beating Pittsburgh, and then Baltimore beating Cincinnati. Baltimore would jump to the 3 seed.
Cincinnati clinches the 3 seed at minimum if they win & Baltimore loses this Sunday. To be the 2 seed, Cincinnati would win out. While KC wins out. Buffalo would then drop to the 3 seed.
Buffalo clinches the 1 seed by winning out. Or, Beating Cincinnati and losing to NE. KC then drops one more game. Buffalo is assured the 2 seed at minimum if they win next Monday.
KC is the 3 seed if Cin wins out & Buf wins in week 17. While they drop one more game.
Cincinnati will beat Buffalo imo. KC will destroy Denver. Leaving Buffalo needing help to get the 2 seed at minimum in week 18.
I don't see a scenario where Buffalo is resting starters in week 18.
Mahomes has never played a road playoff game. In all likelihood, he will start his career by playing at least 11 straight home games. I don't think this has happened before.