2021 AFC Divisional playoff game (Buffalo–Kansas City) - Wikipedia
AFC playoff picture: Chiefs clinch No. 1 seed; Bills can clinch No. 2 tomorrow - Buffalo Rumblings
How the Chiefs and Bills ended one of the craziest games in NFL history - The Washington Post
What we learned about the Chiefs in Week 18 - Arrowhead Pride
Chiefs-Bills Divisional playoff: 5 things we learned in Kansas City's win - Arrowhead Pride
Chiefs' epic victory over Bills leaves NFL fans longing for more, but it doesn't get any better than this
Buffalo Bills to face the Kansas City Chiefs in 2021 AFC Divisional Round
NFL overtime rule 'kind of stinks,' but Chiefs, Bills shrug it off
2021 NFL playoffs: What we learned from 49ers' win over Packers in Divisional Round
What we learned from divisional round of 2022 NFL playoffs: Bills vs. Chiefs is top rivalry, Stafford on fire