Championship Sunday is upon us and we'll be treated to two absolutely fascinating matchups as we determine which teams will ultimately represent the AFC and NFC in New Orleans next month. In the AFC,

The Bills vs. Chiefs Championship game is this Sunday night on CBS and Paramount+, here's what you need to know.

The actual sports part and storylines are incredible: Patrick Mahomes and Andy Reid are in their seventh consecutive AFC Championship Game; the Bills have a lifetime of heartbreak, including Buffalo leading Kansas City with 13 seconds left in a 2021 Divisional Round game before losing.