2021 AFC Divisional playoff game (Buffalo–Kansas City) - Wikipedia
Bills visit KC for rematch of memorable January playoff game
How the Chiefs and Bills Set a Record for Playoff Thrills - The New York Times
How the Chiefs and Bills Set a Record for Playoff Thrills - The New York Times
Kansas City Chiefs top Buffalo Bills in overtime in NFL playoff game
How the Chiefs and Bills Set a Record for Playoff Thrills - The New York Times
That ended poorly: Chiefs fans troll Bills fans but it backfires after Taron Johnson interception
NFL Divisional Round: Biggest winners and losers from Saturday's games
Chiefs tie game in 12 seconds at end of first half, lose it in 13 seconds on final drive
Buffalo Bills vs. Kansas City Chiefs all-time playoff series stands 2-2
Patrick Mahomes, Chiefs withstand rally by Zach Wilson, Jets to win 23-20, Sports
Bills vs. Chiefs: A playoff rivalry steeped in AFL and AFC Championship history - Buffalo Rumblings