2021 AFC Divisional playoff game (Buffalo–Kansas City) - Wikipedia
Kansas City Chiefs collapse to Bengals, missing Super Bowl for first time since 2019
Chiefs win coin toss, game with TD per postseason OT rules
How Kansas City and the Rams Advanced in the NFL Playoffs - The New York Times
Chiefs stun Bills with overtime masterpiece to advance to AFC title game
Kansas City Chiefs 42, Buffalo Bills 36: Final score, recap, highlights
Bills QB Josh Allen still not over coin flip loss to Chiefs
Bills-Chiefs neutral site AFC Championship Game in play; Bengals avoid coin toss with win over Ravens
Chiefs' Patrick Mahomes says rivalry with Josh Allen has 'long way to go' before reaching Manning-Brady level
Buffalo Bills 36-42 Kansas City Chiefs: Patrick Mahomes throws walk-off TD in overtime to clinch win after epic battle with Josh Allen, NFL News
NFL playoffs: Cincinnati Bengals-Kansas City Chiefs picks, predictions
Bills rally to beat Chiefs 24-20 in playoff rematch