The hit on McAvoy was timed at .97 seconds after he released the puck and I believe the Office of Player Safety deems the official cut off for a late hit at .6 seconds. Pretty cut and dried there.
Wagner's hit was vicious and old school. Call me a homer cave man but I love that he went after their best D after the dirty hit on McAvoy. I haven't seen enough slow mo video to know if he crossed any lines but at first glance it looked clean to me. Head on, so it wasn't blind side. I didn't think he launched or got his elbows up but again, haven't seen a slow mo version yet so won't claim to be an authority on it.
That said, I thought Hainsey embarrassed himself in the ensuing fight. Acting like "come on, come on" while backpedaling as fast as he could... he backed himself into a corner, then got dropped. He would have had my respect if he just stuck up for Reilly but all the theatrics only to get dropped was laughable.