I think there's a chance we're overreacting a little. Including myself. I was pretty concerned about how KC played on both sides of the ball after they went up 27-0. it seemed like a collapse. And maybe it was.
But when you look at the boxscore and the team stats, both the offense and the defense played pretty well, statistically speaking. I mean, if I told you before the game, that the Chiefs' defense would force 7 punts out of 13 drives, get 6 sacks, 2 INTs, one pick-6, and only allow DEN to convert 3rd down 6 out of 17 times, what would you think?
Anyway, here's the boxscore, see for yourself:
https://www.espn.com/nfl/boxscore/_/gameId/401437899