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

The situation came on the other side of the two-minute warning on Sunday night. With Kansas City clinging to a 32-29 lead, Allen and the Bills faced a do-or-die 4th-and-5 situation on their own 47-yard line. With Buffalo holding all three of their timeouts, Sean McDermott left his offense on the field to try and convert fourth down.

What's the secret to the Kansas City Chiefs' success? Get the inside scoop from one of the Chiefs' most recognizable players.

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.

The game — and the Chiefs’ historic charge toward an unprecedented Super Bowl three-peat — was slipping away Sunday night in Kansas City.

Another week, another trip to the Super Bowl for the Kansas City Chiefs, and another coaching masterclass from Steve Spagnuolo. A key piece to Kansas City advancing to its fifth Super Bowl in the last six seasons and now set to attempt the NFL's first-ever three-peat was the defensive effort led by Spagnuolo,

Two former New Orleans Saints coaches will be the defensive coordinators of Super Bowl LIX, as Steve Spagnuolo’s Chiefs take on Vic Fangio’s Eagles:

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

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

The Kansas City Chiefs are headed back to the Super Bowl, where they'll look to secure the first-ever three-peat in NFL history. They got there thanks in part to an outstanding play call from defensive coordinator Steve Spagnuolo.

Patrick Mahomes, Travis Kelce and co. are heading to New Orleans on February 9 to face the Philadelphia Eagles, but have something they don’t.

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.