BOSTON — Maybe there will be perspective sometime down the line. But not so much right after the Rangers blew a two-goal lead and lost, 3-2 in overtime, to David Pastrnak and the Bruins on Black Friday afternoon.

“Maybe if you look at the schedule and say you’re going to come out of Boston with a point, you’re going to feel good about it,” coach David Quinn said after the superlative Pastrnak made a slick set-up for David Krejci’s game-winner at 1:40 of the 3-on-3 extra period. “But we feel like we pissed away a point.”

There was a lot for the Rangers (12-9-3) to be happy about, as another generally steadying performance extended their points streak to four games (3-0-1) and made them 9-4-2 in their previous 15. They defended well, with Henrik Lundqvist needing only a handful of tidy saves in facing 27 shots.

But a big doughnut in six power-play chances, including 62 seconds of a 5-on-3 man-advantage and a four-minute power play late in the third, is what undercut all the good.

Those things are hard to overcome against a team like the Bruins (18-3-5), who have yet to lose in regulation in 14 home games and who pretty much coasted through most of the opening 40 minutes, going down 2-0 before being awakened by a flukey goal late in the second period.

“It’s a big point against a really good team,” Lundqvist said. “As a team, we played really well the whole game. The difference tonight — and why they’re winning — is the [penalty kill] and Pastrnak.”

The Bruins’ 23-year-old Czech winger made a terrific play on the winner, dragging it around Pavel Buchnevich, guarding the puck against Adam Fox and then sliding a pass to Krejci for a shot into the gaping net. Lundqvist dove for it, but had little chance.

“For me, I have to respect that he can shoot it from anywhere,” said Lundqvist, who also was beaten between his legs on a Pastrnak one-timer at 4:27 of the third period to tie the game, 2-2, and give the Bruins sniper his league-leading 24th goal of the season (through 26 games). “Look at what he’s been doing so far — it’s a pretty impressive amount of goals. If you want to beat this team, you have to keep him off the score sheet. Their top line, they’re the difference. They’re carrying this team.”

Actually, the Bruins’ vaunted top line is without injured center Patrice Bergeron, and winger Brad Marchand even left for a part of the third period after being dazed in the corner. But they kept it close after Buchnevich opened the scoring at 14:14 of the first, with the lead extended to 2-0 when Filip Chytil buried a rebound chance behind goalie Jaroslav Halak at 6:21 of the second.

But then the Rangers could hardly get a scoring chance — let alone a good one — during their 5-on-3 late in the second, and moments later, a Sean Kuraly tip hit the post and was batted over the goal line by Lundqvist as he reached back with his stick to make it 2-1 going into the third.

“It was almost like they were asleep for 35 minutes,” Lundqvist said. “After they kill off that 5-on-3, it’s almost like they decided to turn it up a little bit. Late second and in the third, there was a different speed to their game.

“That’s where I think they’re one of the best teams in the league. They managed to stay in the game, even though they’re not playing their best.”

The Bruins are as legitimate a Stanley Cup contender as anyone, and the Rangers are still young and learning. That might logically make this result easier to swallow, but as the Rangers readied for the quick turnaround with a Saturday matinee against the Devils in Newark, Quinn was clear if this felt like any type of moral victory.

“Not right now,” he said. “Not right now.”