If the Texans beat the Chiefs and then the Cardinals (likely) and then the Raiders (likely) and one of the Chargers/Colts
they will win the Division and all of your concerns will not happen. Texans are 4-1 in the division with the Colts left to play
and they already beat them. In all likelyhood the Texans and Bills will not be battling for the last WC slot.
Plus, the Chiefs will miss the playoffs.