A video review initiated in Toronto started a lengthy review process —
First, to determine whether or not Petrovic had kicked the puck... Yes he did according to the NHL.
Second, to determine whether or not the puck hit Petrovic’s stick after he kicked it... which it did NOT.
Third, to determine whether or not Hellebuyck propelled the puck into his own net.
And that's the issue. There is no reference to a goaltender propelling the puck into his own net in the NHL rule book off a kicked puck, and that is the language the NHL used. Asked how long ( in time ) is it required to go from deflecting the puck to having possession, so you could propel the puck into your own net, NHL has no answer. And when is the act of trying to make a save not "playing" the puck? You are always playing the puck to some extent.
Also, if the goal is deemed to be an own goal by the goalie, then according to their own rules, no assists should be awarded on the goal to the opposition. But in this case the NHL awarded assists.
So, the NHL is calling it an own goal, but not properly treating it as such.
Oh well, the NHL has a sullied history when it comes to awarding goals to Dallas in the playoffs. Just ask Buffalo.