Bills vs. Chiefs live score, updates, highlights from AFC championship game

The Bills will not get the reprieve from Chiefs quarterback Patrick Mahomes they had hoped for in Sunday's 2021 AFC championship game.

Mahomes was knocked out of the divisional round by a hit to his head area, but he passed though the NFL concussion protocol during the week and will start at Arrowhead Stadium. Chad Henne would have been the choice had Mahomes been ruled out.

While the Bills held the Ravens and Lamar Jackson to three points last weekend, their encounter with Mahomes presents a far greater challenge to their Super Bowl quest. Kansas City's offense usually hums under its star passer in a way few other teams can match. And even though Buffalo is proficient at moving the ball behind Josh Allen, the combination of crowd noise in Kansas City and the pressure of a conference title game is unfamiliar.

The AFC championship game is the NFL's second matchup Sunday after the Packers and Buccaneers clashed earlier in the afternoon.

Sporting News is tracking live scoring updates and highlights from Bills vs. Chiefs on Sunday night. Follow below for complete results from the 2021 AFC championship game.

MORE: Watch Bills vs. Chiefs live with fuboTV (7-day free trial)

Bills vs. Chiefs score

  Q1 Q2 Q3 Q4 Total
Bills 9 3 3 - 15
Chiefs 0 21 3 - 31

Bills vs. Chiefs live updates, highlights from AFC championship game

9:04 p.m.: TOUCHDOWN, Chiefs. Kelce gets an underhanded pass from Mahomes. 31-15, Kansas City.

9 p.m.: Hill dashes for 71 yards! That's a crushing moment for a Buffalo defense that had been so focused on limiting big plays.

8:57 p.m.: FIELD GOAL, Bills. Buffalo answers with its own third-quarter kick. 24-15, Kansas City.

8:56 p.m.: Allen throws incomplete on third-and-3 in the red zone, bringing out the field goal unit.

8:50 p.m.: Cole Beasley, so much better since joining the Bills from Dallas before last year, makes a 23-yard catch.

8:45 p.m.: FIELD GOAL, Chiefs. Kansas City extends its lead. Travis Kelce has 100 receiving yards. Hill has 89. 24-12, Kansas City.

8:32 p.m.: Hill starts the second half with a 31-yard catch-and-run that will be almost halved by him stepping out of bounds. Replay reduces it to a 16-yard gain.

Halftime: Chiefs 21, Bills 12

8:14 p.m.: FIELD GOAL, Bills. It will be a nine-point game entering halftime barring a crazy kickoff return. 21-12, Kansas City.

8:13 p.m.: The Bills bring out the field goal team on fourth down inside the 5 with 14 seconds left in the half. Questionable choice.

8:02 p.m.: Two-minute warning. Bills are on the move.

7:53 p.m.: TOUCHDOWN, Chiefs. Clyde Edwards-Helaire takes a turn scoring for his rampant offense. 21-9, Kansas City.

7:50 p.m.: Tyreek Hill bursts into open space, which of course is bad news for Buffalo. He took a short pass 33 yards there.

7:43 p.m.: The Bills go three-and-out.

7:37 p.m.: TOUCHDOWN, Chiefs. That was fast. Kansas City has its first lead of the contest. Darrel Williams went up the middle for six yards. 14-9, Kansas City.

7:29 p.m.: Allen torpedoes his own drive with an intentional grounding penalty. The Bills punt.

7:27 p.m.: Bashaud Breeland commits a roughness penalty, allowing the Bills to advance almost to midfield.

7:20 p.m.: TOUCHDOWN, Chiefs. Hardman scores after his costly fumble earlier. Nice bounce back. 9-7, Buffalo.

End of first quarter: Bills 9, Chiefs 0

7:14 p.m.: Mahomes hits his running back in the flat. The Chiefs enter the red zone.

7:13 p.m.: The Chiefs have a big fourth-and-1 coming up.

7:02 p.m.: TOUCHDOWN, Bills. Dawson Knox sprints across the formation, and Allen makes a good throw to the tight end. Extra-point is missed. 9-0, Buffalo.

7:01 p.m.: MUFFED PUNT. Mecole Hardman lets the ball through his hands, and the Bills recover on the brink of the goal line.

7 p.m.: Allen takes a 15-yard sack, dooming Buffalo's drive.

6:54 p.m.: The Chiefs go three-and-out. 

6:47 p.m.: FIELD GOAL, Bills. Buffalo strikes first with a 10-play, 42-yard drive that inspires some confidence in what's to come. 3-0, Buffalo.

6:44 p.m.: Allen finds Stefon Diggs to move the Bills past midfield.

6:40 p.m.: The Bills start with the ball.

Bills vs. Chiefs start time

  • Start time: 6:40 p.m. ET
  • TV channel (national): CBS
  • Live stream: CBS All Access | fuboTV

The AFC championship game is scheduled to start at 6:40 p.m. ET. This is the second of the two conference championship games taking place on Sunday, Jan. 24. By kickoff, one of the Super Bowl contestants will already be known. By the game's conclusion, we'll know the NFC's opponent in the big game, too. 

Neither of these teams have kicked off at this exact time all year, although they're no strangers to night games and should be ready to go by Sunday evening. 

NFL playoff schedule 2021

Conference championships

Sunday, Jan. 24

Matchup Start time TV channel Live stream
Buccaneers at Packers 3:05 p.m. ET Fox fuboTV
Bills at Chiefs 6:40 p.m. ET CBS fuboTV

Super Bowl 55

Sunday, Feb. 7

Matchup Start time TV channel Live stream
AFC champion vs. NFC champion 6:30 p.m. ET CBS fuboTV

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