Buffalo trailed 10-7, but scored on two possessions in the fourth quarter, as Allen rallied the Bills for a comeback win for the fifth time this season.
Buffalo improved to 8-3, to match its best start since Hall of Fame quarterback Jim Kelly's final season in 1996, while keeping the Bills firmly in position to secure their second playoff berth in three years.
Kirk Cousins threw two touchdowns to Adam Thielen, Dalvin Cook ran for 132 yards and the Vikings made life miserable for Daniel Jones and the New York Giants in every way possible in a 28-10 victory Sunday.
Allen threw for 219 yards and two touchdowns with only one interception as the Bills beat the Tennessee Titans 14-7 Sunday in a defensive showdown for their third straight win in this series.
e Buffalo Bills, meanwhile, dropped to 3-1 following a 16-10 loss on Sunday and were left fuming after starting quarterback Josh Allen was unable to finish the game following a helmet-to-helmet hit by Jonathan Jones.