Panarin's first-period goal wasn't reviewed even though the puck touched the netting protecting spectators earlier in the play. The officials didn't initially see it hit the netting, and the play wasn't eligible for video review.
Rask admitted postgame he didn't notice it, either.
“If I saw it, then I would have probably slammed the stick and chased the refs," the netminder said.
David Backes took a more calm approach.
"Let's take a deep breath and get it right," he said, according to The Boston Globe's Matt Porter.
Bruins head coach Bruce Cassidy hadn't gotten a good enough look when asked about it postgame, but he appeared to wonder how the call was missed.
Cassidy added the call "didn't bother" the Bruins, who ultimately evened up the second-round series at two games apiece.