Connauton should have moved across and forced Tatar to make a move sooner instead of giving him that much time in front of the net. But at the same time, Lack could have easily poke checked the puck away from him.
Oh well, all part of the learning experience for these guys.
Upon several replays of the highlights, it seems like all three PK'ers made a mistake on that sequence. However I think Desbiens could have done a better job - his stick was covering the lane to the point man, but if he had been closer to the net and covering the pass through the slot, Friesen wouldn't have had to dive out that far to try and block a potential shot.
As for Connauton I can see why he chose to take away the pass as Tatar didn't have the best shooting angle, but either way the situation's not going to be ideal. Lack also could've tried for a poke check, but at that the miscommunication was complete and they were probably going to score either way, with the other 2 guys that far out of position.