The Linesman was along the boards in front of the Bruins bench, inadvertently standing right in front of the bench for the forwards. Marchand was trying to access the door, and in his frustration, he shoved the linesmen out of the way.
Remarkably, the Linesman continued to do his job throughout the ordeal, calling a zone entry onsides as the Bruins captain shoved him. Normally, touching any of the on-ice officials like this would be an automatic penalty and likely suspension for abuse of officials. However, Marchand got away with this one.