It’s telling that, according to the Islanders’ Pierre Engvall, the longest run he has had with a pair of linemates came with David Kampf and Ilya Mikheyev in Toronto.

Not because he’s wrong — that trio played 35 games together for the 2020-21 Maple Leafs — but because it speaks to the role in which Engvall was pigeonholed north of the border.

On a team with Mitch Marner, William Nylander, Michael Bunting, John Tavares and Auston Matthews, breaking into the top-six proved nearly impossible for Engvall.

Maybe it was a mistake not to give him more of a chance.

That’s because, since he came to the Islanders ahead of the trade deadline last season, with a 2024 third-rounder going to Toronto in exchange, Engvall has been not just a fixture on the second line, but also a driving force behind its success.

“Obviously, sometimes you’re asked to play a certain way,” Kyle Palmieri, who plays on the second line with Engvall, told The Post. “And sometimes whether it’s personnel or the way you’re expected to play, you want to be in the lineup trying to help your team win hockey games. You gotta find ways to do that and I’m sure that’s what was going on in Toronto. He had to stick in the lineup and play a certain way to do it. Now he’s got a little more of an expanded role and some more opportunity to show off his game.”

Engvall has picked up this season right where he left off this past spring, creating a goal in the Islanders’ opener with quick closing speed to win a puck off the Sabres’ Connor Clifton.

The play ended with Brock Nelson depositing it in the net.

That speed was the initial selling point of Engvall’s game when he came to the Island, and he has lived up to the hype.

But he’s showing ability that wasn’t so evident when he was in a defense-first role with the Maple Leafs.

“I think I get to play more in the offensive zone,” Engvall told The Post. “I think we’re starting more in the offensive zone. Also, if you get a role to play more defensively, somehow you gotta develop a bit more. I think it’s [about] a role, too.”

Engvall mentioned a shift in his fifth game with the Islanders, last March in Los Angeles.

He’d started the night playing with Jean-Gabriel Pageau and Hudson Fasching, but ended up on the ice with Brock Nelson.

“It worked well,” he said. “We just kept going and played good.”

Engvall, Nelson and Palmieri have become a fixture since then, playing together in 21 straight matches, including the playoffs.

Since he joined the Islanders, Engvall’s on-ice goal-share has hovered at a hair below 66.67 percent, with an expected goals rate north of 55 percent.

“Obviously we played against him when he was in Toronto,” Palmieri said. “First off you notice the speed and his size. I think his poise with the puck and his ability to make plays and carry the puck up ice [was surprising]. Him and Nellie do a great job of doing that. We knew he was a good player and we were getting an impact player for our team when we traded for him, but I’ve been pleasantly surprised with how he plays.”

Had the Maple Leafs realized that was in Engvall, surely they would not have dealt him for a future draft pick when the franchise was under so much pressure to perform.

But they did, and instead, it’s the Islanders reaping rewards.

“He’s shown me some offensive ability that has been really nice to see,” coach Lane Lambert said. “And I think as he gets these opportunities — and he’s getting opportunities — he’s taking advantage of it.”