I'm actually surprised they called that. They put away their whistles for a long time, Kane's stick was being grabbed non-stop, Shaw got tripped and Panik, too, Brower knocked someone down out at center ice, but no interference was called, then they started calling penalties on the Hawks in the third for stuff they ignored half the game. Regardless, you can't go down three games to one and down by two goals in the first period of both games 6 and 7 and expect everything to go your way.
The Hawks have played 12 series in the last 4 years many more than any other team - and this was only the Blues fourth series in the last 4 years. Hawks got tired and blew leads in the third period in both games 3 and 4, at home. They've been running on fumes for awhile and finally ran out of gas. They should take advantage of the rest this Summer and come back with their batteries charged in October.
Go Hawks!