"During the shootout between the Canadiens and Blackhawks, the person assigned to monitor the game in Toronto was the first to realize that Frank Nazar had scored-and that no one on the ice had noticed.
He immediately used his mic to contact the person responsible at the scorer's bench.
I don't know what happened inside the arena, but the officials went to get a new puck and
Patrik Laine had already begun his attempt before everyone was alerted and before the decision on the ice could be changed.
If I were a viewer, a fan in the stands, or
Brendan Gallagher, I would also believe that the decision was made too late.
But having seen it in person, the league did in fact notify the officials at the scorer's bench in time."
- Elliotte Friedman