Leason tied it 1-1 at 8:25, following his shot from the left face-off circle to score on the rebound with a backhand. Leason was scratched Monday and had not played since Jan. 19.
"It was great," Anaheim coach Dallas Eakins said. "'Leas' had been out. He had not been playing before the break. I really wanted to get all of our guys in here right away. He played very well. That line was very, very good. Megna scores a goal. [Derek] Grant rings one off the crossbar. Leason's good. You would term that our fourth line, but tonight they were our best line."
Seth Jones put the Blackhawks ahead 2-1 at 13:09, taking a pass just inside the right circle from Dickinson on a rush.
"Yeah, I thought we outplayed them for three periods," Blackhawks coach Luke Richardson said. "That was probably the most [offensive]-zone time and rotation and movement that we've had all year. A couple of, maybe, line rushes a little too fancy, that extra pass. But their goalie made a few good saves, especially on Tyler Johnson on the one power play.
"He's a big goalie and he just played well and we just didn't have that killer instinct to put that third one in the first 60 minutes. I thought we could've been up maybe a couple of goals by then, but you have to shoot and you have to score to be up."
Megna tied it 2-2 at 15:42 when he intercepted Jones' pass from behind the net and scored from the right circle. It was his first goal since being claimed off waivers from the Colorado Avalanche on Dec. 6 and first NHL goal since Feb. 9, 2017, when he was with the Vancouver Canucks.