I believe for the chiefs Alex Smith had outstanding lines, and one year did not throw a td to a wr. He definitely got better. Frankly every chiefs team from the early 90s until the last year of Smith and obviously Mahomes had very solid olines with I believe two hall of famers on those lines over the years (Shields, Roaf), and many many really good ones
He shouldn’t even have a seat to be hot. He’s done less with more than any coach I can remember. As such I sincerely hope his crap owner retains him