The Chiefs are frauds.
To be the best you must defeat the best. The post season is where you achieve that. The Mahomes Chiefs have never beaten a HOF QB or HOF HC in the post season. 0 - 4 to date.
Loss to BB
Loss to Brady
Loss to Arians
Loss to Brady
Why 0 - 4?
Because the HOF HC can have the best gameplan in history, but its meaningless unless his QB can go out and execute. Its essentially 2 games in 1 because you're competing against the QB who controls his team. And, you're also battling against the HC who devises the gameplan and adjusts (or not) during the game. The HC generally calls the shots and instructs the QB on what to do.
If the Pats are lucky enough to make the post season and face Buffalo and win, they did not defeat a HOF HC and QB.
If the Pats face the Chiefs and are victorious then NE did defeat a HOF HC and QB.