BOSTON - The sight of Josh Morrissey speeding in like a missile and crushing B’s defenseman Matt Grzelcyk from behind at the end of the second period on Tuesday night might just have been the last straw for the Bruins.

Morrissey was hit with a five-minute boarding major penalty as a result of the hit and the Bruins scored a couple of goals on the ensuing, extended power play to earn a point in a 5-4 loss. Still, league sources confirmed to NBCSportsBoston.com that Morrissey wouldn’t be receiving any supplemental discipline as a result of the punishing hit where the Winnipeg defenseman elevated and drove Grzelcyk’s head into the dasher in the final seconds of the second period.

The belief was that Grzelcyk turned toward the end boards at the last minute and “put himself into a vulnerable position immediately prior or simultaneously with the check” straight out of the NHL rulebook. The explanation from the NHL's Department of Player Safety is that it was a "green-light hit" just .3 seconds before contact and only became a "red-light hit" a virtual millisecond prior to the collision leaving little time for Morrissey to ease up, and zero time for him to change his hit trajectory.

On the other side, the Bruins felt there was situational consideration that should have taken place with Morrissey leaving his spot by the blue line to light up Grzelcyk as the second period time clock wound down to zero. Morrissey saw Mark Schiefele get hit hard in the other corner and it certainly appeared that he launched into Grzelcyk to get a little payback in a chippy, physical, late-season game. To say they were surprised and angered that there was no supplemental discipline would be a solid understatement. Bruins team president Cam Neely finally erupted on Wednesday afternoon following the presser for the Zdeno Chara contract extension.

“There’s a time and a place. That [Morrissey] hit is a defenseman coming in with a second left in the period. Nothing is going to happen there other than our player getting hurt. Yeah...yeah...it’s very frustrating,” said Neely exclusively to NBCSportsBoston.com. “As much as you’d like to believe there is going to be more consistency, I sometimes don’t understand the rationale behind certain outcomes and the decisions that are made. When it doesn’t go the way you think it’s going to go, then you’re going to be frustrated, and if it goes your way then you’re pleased. I think this organization has been more frustrated than not [frustrated] this year.”

It perhaps started with the three-game suspension for David Backes where there was never a clear video replay showing that the Bruins power forward made forceful head contact with Red Wings forward Frans Nielsen. Backes had a spotless disciplinary record in his NHL career, but it was late contact with a concussion for Nielsen that got Backes three games regardless of his clean record. That suspension came on the heels of Patrick Hornqvist getting no disciplinary action for a hit with head contact on Charlie McAvoy, another play where a hunched over B’s defenseman had put himself in a vulnerable spot.

It continued with Brad Marchand getting fined for embellishment in the day or two following the Backes suspension and then there was again no supplementary discipline on a Brayden Schenn hit with head contact on David Krejci.

The Schenn/Krejci hit was similar to Hornqvist/McAvoy that in both instances the Bruins player’s head position was lowered making it difficult for the hitter to avoid head contact, but the Schenn/Krejci incident was also a borderline play that the Department of Player Safety deliberated on for a noticeably long time before coming to that finding.

None of this even takes into account the way the on-ice officials clearly swallow their whistles at times as B’s pest/elite player Brad Marchand is getting beaten down, legally and illegally, on the ice.

It may just be that there’s a spate of these things with the Bruins the past few weeks and certainly, it becomes a heightened situation when it’s this close to the playoffs. Either way, the Bruins organization isn’t happy with the way things have come down and Neely made more than a passing reference that the B's displeasure runs all the way to the top with powerful owner and NHL Chairman of the Board of Governors, Jeremy Jacobs.

“You try to live with it and move on, but when it’s happened a few times you’re like ‘Why are these coming down the way they are,” said Neely. “It’s been frustrating [for the Bruins organization] from the top down, believe me.”

Is there something that Neely can put his finger on as to why that keeps happening to the Bruins?

“I wish I could say this is the reason why. It’s hard for me to come up with an answer or a solution as to why calls are going the way they’ve gone. It’s frustrating,” said Neely. “It’s really frustrating. It’s not that you wish ill will on another player, but it’s like ‘this happened to us, so why isn’t it happening to them too?’ That’s what kind of goes through [your mind]. If you really dissect suspensions and what was the cause of the suspension, you can look at it and say that it’s not that different [from the plays against the Bruins players].

You feel like that you can make a case or an argument, but sometimes you really feel like you’re talking to a wall.”

Does Neely have cause to be “very frustrated”? Absolutely, when it comes to watching his players take big hits with little payback either in terms of on-ice fighting or through the proper channels of supplemental discipline. The sense here is that the Department of Player Safety is doing the best job it can and that the Bruins have found themselves in a stretch of borderline plays with the Backes suspension really sticking out as a head-scratcher. There's a good case to be made that Morrissey could have been hit with a suspension as well.

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All that being said, it might be best for everybody involved if the Bruins come out on the right side of a few league decisions in the coming weeks and months when the importance of the games ratchet up and this “very frustrating” stretch might be long forgotten on a long postseason run for the Black and Gold this spring.