I found this strange. The Leafs were the home team, have a great crowd, and should be feeling about themselves and their game. They should be the ones dictating play, particularly in the comforts of their home building.
It got kind of lost in all the goals that ended up being scored, but they actually did have a good first few shifts. However, they took a penalty, the Bruins scored and then they scored quickly again, and there seemed to be some shell-shock that set in.
Many of the Leafs players, particularly John Tavares and Frederik Andersen, admitted it was not their best start and that the Bruins came out harder than them.