As one of the sharpest minds in football, Los Angeles Rams coach Sean McVay knows a lot.As for how to stop Josh Allen? To be fair, nobody really knows how to do that.”If I had the answer, it would be a lot easier,” McVay said. “Everybody tries to figure that out week-in and week-out.”Allen will try to maintain his dominance when the Buffalo Bills (10-2) visit the Rams (6-6) on Sunday afternoon.The Bills have won seven games in a row, including 35-10 at home against the San Francisco 49ers last weekend. Buffalo already has clinched the AFC East title and is one game behind the Kansas City Chiefs for the No. 1 seed in the conference.Meanwhile, the Rams have alternated wins and losses in the past five weeks. They are coming off a 21-14 road win against the New Orleans Saints.McVay and the rest of the Rams’ coaching staff will have their hands full as they look to slow Allen, who is making a case for his first NFL Most Valuable Player award.Allen has passed for 20 touchdowns with only five interceptions this season while posting a 100.3 passer rating. He also has rushed for 334 yards and six scores.Last week against the 49ers, Allen got credit for two passing touchdowns, one rushing touchdown and one receiving touchdown. He threw only four incomplete passes.”We’re having fun doing what we do,” Allen said. “At the same time, we’re very intentional about what we’re doing. …”We understand we’re going all the way across the country to a team that’s very hungry. They’ve been playing really good football as of late. Their defensive line is one of the better units you’ll see. They’ve got a lot of dogs up front. I know they’re young up there, but (they have) some really, really good players, some studs over there on the defensive side of the ball.