The Cheifs twice put a 40-burger on the Pats with Alex Smith, in 2014 and 2017. Mahomes inherited a team with:
Travis Kelce (TE), All-Pro before Mahomes arrived
Tyreek Hill (WR), All-Pro before Mahomes arrived
Eric Fisher (LT), #1 overall draft pick
Mitchell Schwartz (RT), All-Pro before Mahomes arrived
Anthony Sherman (FB), All-Pro before Mahomes arrived
Kareem Hunt (RB), Pro Bowl before Mahomes arrived
He then also got Sammy Watkins (WR) who was an extremely expensive addition, and now Joe Thuney (G). They're also still spending their high picks on skill players with Clyde Edwards-Helaire (RB) #31 and Mecole Hardman (WR) #56.
It's hillarious how screwed they are now after shellilng out all this money to build up that offense at the expense of the defense. And his contract is coming due.