Jacob Trouba tied the game 1-1 at 15:29. He one-timed a pass from Kiefer Sherwood past Swayman's blocker two seconds after a power play expired.
McAvoy put the Bruins back ahead 2-1 at 18:43. JJ Peterka found a loose puck to the left of Askarov and passed to McAvoy, who tapped it past Askarov's left pad as he was crashing the net.
"It was just fun to be playing again. That was nice (to score)," McAvoy said. "I thought that was a big boy shift, and we were trying to hold onto the puck. Just tried to break them down, and it was a great pass by JJ."
Stenberg tied the game 2-2 with a power-play goal at 5:48 of the second period. Celebrini waited in the right face-off circle before finding Stenberg at the back post for a tap-in past Swayman's right leg.
It was the first career goal for Stenberg, who was the No. 2 pick in the 2026 NHL Draft.
"Just happy to get the first," Stenberg said. "Good play from Mack, and yeah, nice to score a goal."