The Buffalo Bills had to give "everything" to rally past the Miami Dolphins and clinch their playoff berth, but Josh Allen's heroics were of no surprise to his team-mates.

The Bills led their AFC East rivals 21-13 at halftime but were then 29-21 down in the fourth quarter, requiring quarterback Allen to step up.

In snowy conditions, his 44-yard run ignited a drive that ended with a two-point conversion to tie the game, although Buffalo soon faced giving the ball back to the Dolphins with time on the clock.

Instead, Allen led his team 65 yards up the field on a 15-play drive that used up all of the remaining time and put Tyler Bass in position to kick the decisive field goal.

An exhausting effort was rewarded with a playoff berth and left coach Sean McDermott "humbled".

"It took everything we had to pull this one out tonight," he said. "It just makes it special.

"It's humbling. Really, that's how I feel about it. Humbled to be a part of it in this great town that doesn't get as much credit as it deserves, honestly.

"And the fans, I mean, this place is unique. So, just awesome. Awesome."

Allen is similarly unique, according to his team-mates.

"He makes plays that I've never seen before," said tight end Dawson Knox, who caught the final TD pass of the game. "Sometimes you kind of turn into a fan while you're watching him.

"Unfortunately, I was under a 300-pound 3-technique on that play that he reached the ball over on the two points, so I didn't see it until we saw the JumboTron.

"But I've talked about it before. It's not even surprising at this point. You're just like, 'oh, there's Josh being Josh again'.

"He's the best quarterback in the league, the best football player in the league. So, anytime you've got him on your team, you've got a chance to win."

The Bills have made the postseason for a fourth straight year, but they have not been back to the Super Bowl since losing four in a row in the early 1990s.

"You can't win the Super Bowl unless you make the playoffs," added Allen. "So, that's goal number one down. Goal number two now is to clinch the division. That's how we'll take it.

"We'll take it one game at a time. Be ready for next week."

The Buffalo Bills have officially listed quarterback Josh Allen as questionable for Sunday's key game against the Minnesota Vikings as the midseason MVP candidate continues to manage a sprained right elbow.

Allen was termed a limited participant in Friday's practice after sitting out the previous two days with an injury he picked up in Buffalo's 20-17 loss to the New York Jets last weekend.

The five-year veteran did not leave that contest but had his most ineffective performance of the season, completing just 18 of 34 passes for 205 yards with no touchdowns, two interceptions and a 46.8 passer rating.

"We are literally in an hour-to-hour situation here," Bills coach Sean McDermott said of Allen on Friday.

"We're just looking at how he's going to progress through the day, and as he goes through these different tests, medically, making sure he's able to check the boxes in a progression to where we can see if we can proceed through the course of the day here."

McDermott was then asked what Allen will need to show the coaching staff in order to be cleared for the clash against the 7-1 Vikings.

"That's probably getting too far down the road at this point or into the weeds."

If Allen ends up inactive, journeyman Case Keenum would direct a Bills offense that ranks second in the NFL in total yards per game.

Keenum made a pair of starts for the Cleveland Browns in 2021 and won both while compiling 375 passing yards with three touchdowns, one interception and a 95.3 rating.

Allen sat out four games with a similar issue in his elbow as a rookie in 2018 but has not missed a game since, having started Buffalo's past 69 games including the postseason.