The third straight trip to extra time was not a charm for the Bruins in Calgary.

After winning at home in a shootout against Dallas on Monday and then in overtime against the Oilers in Edmonton on Wednesday, the B’s took the Flames to an entertaining overtime at the Saddledome on Thursday. But after the B’s missed on several chances for the winner, including a Mason Lohrei shot that hit the crossbar, Nazem Kadri beat Linus Ullmark on a wrist shot from the left circle with 1:04 left in overtime for the 3-2 Calgary win.

The Bruins were not good in the first period in which they fell behind 2-1. The Flames even gave them a gift late in the period, but the B’s gave it right back to them.

Calgary held a 16-8 shot advantage and a territorial edge that might have been greater than the shots indicated. Much like the first meeting at the Garden two weeks ago, the Flames won the majority of 50-50 battles and did a solid job of taking away the B’s space.

The Flames took the first lead of the game off the rush when defenseman Oliver Kylington, the trailer who was not picked up by any Bruin defender, beat Linus Ullmark from the high slot to the glove side at 12:55.

The B’s got that one back.

Late in the period, Mason Lohrei tried to connect with Brad Marchand on a stretch pass up the middle but it was just out of reach. That created a race between Marchand and goalie Jacob Markstrom that Markstrom won. But the goalie was way out of his net and, when his clear attempt up the middle of the ice went right to Charlie Coyle, the B’s center was able to fire it into the empty net with 1:19 left in the period. That was Coyle’s 19th of the year and snapped an eight-game goal-less streak for him.

But the B’s could not o into the first break tied up as they allowed another rebound goal just 42 seconds later. Connor Zary fired a puck on net that produced a rebound off Linus Ullmark. Continuing a troubling trend, an opponent was first to the puck and Martin Pospisil tapped in the gimme with 36.1 seconds left in the period.

Chancees start to come in the second period for the B’s, but not any goals. On one power play, Pavel Zaca could not get all of a rebound chance and then Markstrom robbed David Pastrnak after he was set up beautifully by Brad Marchand. Then Jakub Lauko was sent off on a clean breakaway by James van Riemsdyk but he couldn’t get his shot under Markstrom’s blocker.

The B’s had a late power play that was nullified when Pastrnak was called for a phantom slash.

The B’s outshoot the Flames 11-5 in the second period, but they still had work to do, starting wiith 30 seconds of penalty kill to start the third.

They did so, and then tied the game at 2:33. Anthony Richard made a smart pass off the glass from his own zone to sprung Coyle for a partial break. Coming inn on the right wing, the big centerman used his body to shield the puck from the Calgary defenseman Rasmus Andersson, cut across the top of the crease and beat Markstrom on a backhander for his 20th.

The B’s had chances for the go-ahead goal but were denied and in the final seconds, the Flames clanged the post before Charlie McAvoy cleared the puck from danger to send it to extra time.