Patrick Mahomes passed for 378 yards and rushed for 69 Sunday as the Kansas City Chiefs advanced to their fourth straight AFC championship game, outlasting the Buffalo Bills 42-36 at Kansas City, Mo.

Mahomes completed an 8-yard touchdown pass to Travis Kelce on the first possession of overtime, which prevented the Bills from ever getting a chance in the extra session.

Kansas City claimed its 11th win in 12 games but will host the AFC championship game next Sunday against the one opponent that beat the Chiefs during that stretch, the Cincinnati Bengals.

The teams each scored twice inside the final two minutes of regulation, generating 25 points during that span. Kansas City forced overtime on a 49-yard field goal by Harrison Butker as time expired.

Before that, Josh Allen fired touchdown strikes of 27 and 19 yards to Gabriel Davis, the last coming with 13 seconds remaining. Mahomes responded to the first score by hitting Tyreek Hill with a 64-yard TD strike before finding Hill for 19 yards and Kelce for 25 to set up Butker.

Allen played brilliantly, connecting with Davis for four touchdowns, while finishing with 329 yards passing and 68 yards rushing. Davis caught eight passes for 201 yards.

Mahomes finished 33 of 44, with 11 strikes to Hill for 150 yards.

Allen engineered a 75-yard march in 75 seconds, firing an 18-yard touchdown pass to Davis with 37 seconds remaining to forge a 14-14 halftime tie. Buffalo also scored on its first drive, converting two fourth downs, including a 1-yard touchdown rush by Devin Singletary.

Mahomes engineered touchdown drives of 11 and 12 plays in the first half. He rushed for 49 yards on the first series, including an 8-yard score, and found Byron Pringle for a 2-yard TD pass with 1:52 remaining in the second quarter.

For the half, Mahomes totaled 163 yards and Allen 158, with no turnovers.

A 50-yard field-goal attempt by Butker in the first half sailed wide right.