The Buffalo Bills had their season come to an end Sunday night with a devastating loss to the Kansas City Chiefs in the AFC championship game. Their final offensive play will be thought about by a lot by players and fans over the offseason, as the failed 4th-and-5 came so close to being converted on a desperate heave by Josh Allen.

Chiefs defensive coordinator Steve Spagnuolo pulled out one of his best calls when his team needed it against the Bills.

Kansas City #Chiefs defensive tackle Chris Jones gives a ringing endorsement for defensive coordinator Steve Spagnuolo | @EdEastonJr

Kansas City #Chiefs defensive coordinator Steve Spagnuolo shares rules for maintaining Buffalo #Bills QB Josh Allen: ‘He sees everything’ | @EdEastonJr

Stopping the Josh Allen tush push was a major part of the game and it is the play that is still being discussed as a lot of people think that it should've been a first down. It wasn't, and Chiefs defensive coordinator Steve Spagnuolo spent a lot of time getting his team ready for plays just like that.

Hurts largely succeeded against the blitz on the NFC side of the playoff bracket. But the Los Angeles Rams, who sacked Hurts seven times in Philadelphia’s 28-22 win in the divisional round, gave the Eagles quarterback considerable trouble. Oftentimes it appeared his checkdown options were ill-placed or covered up entirely.

Yes, cornerback Trent McDuffie — historically an excellent pass-rusher from the outside, and one who helped save the Chiefs in last year’s Super Bowl with a well-timed rush — got the green light to attack Bills quarterback Josh Allen. Or, perhaps, he made that decision on his own.

It wasn’t always pretty for the Kansas City Chiefs’ defense in the AFC Championship, countering the Buffalo Bills’ dynamic offense that avoided turning the ball over. The 32-29 final was the result of an epic back-and-forth between arguably the two best quarterbacks in the NFL.

The Kansas City Chiefs are going to the Super Bowl ... again. One year after claiming their second straight Lombardi Trophy, the reigning champions punched their ticket to Super B

Sean McDermott needs to take a hard look at his defense and make some structural changes for next season, writes Mark Gaughan.

Defensive coordinator Steve Spagnuolo's use of the blitz could be the Chiefs' key to beating the Bills in the AFC Championship Game on Sunday.