Games since then include the Chiefs’ 42-36 win in overtime in the 2021 AFC Divisional Round, known in Kansas City as the “13-second game,” and last season’s 27-24 escape in Buffalo, sealed when Bills placekicker Tyler Bass missed a 44-yard field goal in the final two minutes.

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.