There isn't a contemporary NFL quarterback rivalry quite like Josh Allen versus Patrick Mahomes. While the MVP-level signal-callers don't play in the same division, they've made a habit of meeting in high-stakes contests.

We break down the biggest strengths and question marks in the Bills-Chiefs matchup, plus the X-factors that could make all the difference.

The Buffalo Bills have waited years for this moment. Now they’re back, and facing a familiar foe. Once again the fate of the AFC hinges on a game between the Bills and Chiefs, but this is the first time since 2021 that they’ve met in the Championship game.