They are 8 behind. Does the fact that teams play a certain way in the 1st half, guarantee they play the same way in the 2nd half?
There are dozens of possible eventualities.
It's not just 8 points. They also have a game in hand. So consider it at least 9 and more probable 10 since they don't lose in regulation.
Of course it's possible. Even if they come back down, 8 plus pts is hard to make up considering 3 pt games. Boston is a tank. Their lineup is solid in all areas. There are no weak marks for the playoffs in the Conference. All 8 teams going in will be good. So getting a wild card team is not a walk in the park. They've lost to Columbus and Montreal, granted those are covid years.
Bottom line is just get in and don't choke in game 7.
The only way I see Boston being caught is if Ullmark is not available. He's 20-1-1 with a GAA of 1.90 and SV% of .938
Backup Swayman is 7-3-3 2.68 GAA and SV% .897