Bros and foes: Bills' Allen, Chiefs' Mahomes rivals, friends

Buffalo Bills quarterback Josh Allen (17) runs off the field following an NFL football game against the Pittsburgh Steelers in Orchard Park, N.Y., Sunday, Oct. 9, 2022. The Bills won 38-3. (AP Photo/Adrian Kraus)

Buffalo Bills quarterback Josh Allen meets with reporters after an NFL football game iagainst the Pittsburgh Steelers in Pittsburgh, Sunday, Oct. 9, 2022. The Bills won 38-3. (AP Photo/Joshua Bessex)

Buffalo Bills quarterback Josh Allen (17) scrambles with Pittsburgh Steelers linebacker Devin Bush (55) defending during the first half of an NFL football game in Orchard Park, N.Y., Sunday, Oct. 9, 2022. (AP Photo/Adrian Kraus)

Kansas City Chiefs quarterback Patrick Mahomes scrambles for a first down during the first half of an NFL football game against the Las Vegas Raiders Monday, Oct. 10, 2022, in Kansas City, Mo. (AP Photo/Ed Zurga)

Kansas City Chiefs quarterback Patrick Mahomes signs autographs after an NFL football game against the Las Vegas Raiders Monday, Oct. 10, 2022, in Kansas City, Mo. The Chiefs won 30-29. (AP Photo/Charlie Riedel)

Kansas City Chiefs quarterback Patrick Mahomes (15) avoids Las Vegas Raiders safety Tre'von Moehrig (25) during the second half of an NFL football game Monday, Oct. 10, 2022, in Kansas City, Mo. (AP Photo/Charlie Riedel)