So when Paddock named his nephew the starting goaltender for the Memorial Cup tournament, it was based on Max's strong second half, not a family bond.
That was important to John. It's a precedent that was set back when he drafted Max 212th overall in the 2015 WHL Draft.
"As he's come along, you have a different relationship. We just don't show it at all at the rink," John said. "I coached one of my brothers at one time, not (Max's) dad, but the other brother a little bit. I think I've always had a real solid separation of family at the time when you're working with people.
"We're both busy with our things. I'm busy with the team in one way or the other, when I was doing both jobs or just managing. Up until this past season, he had school and everything, so there wasn't a lot of interaction. I think that's also just part of the plan of it or the way it needs to be."
Max would go undrafted in 2018, but he's back on the list of North American goaltenders eligible to be selected at the 2019 NHL Draft in Vancouver, BC, ranked number 30.
John thought there was a chance Max would get picked in 2018, but in conversations he's had, the sample size of Max's work wasn't quite big enough yet.
"He didn't start to play until January that year as a number one. I understood that," John said. "I was a little bit surprised last year with the way it went, but I don't think you can rule out a bit of a surprise this year that could go the other way. That's hockey."
The upcoming 2019 draft doesn't come up much between the two Paddocks. John said there was a quick chat about it at the year-end meeting after the Pats finished 19-45-1-3, putting them fifth in the East Division in 2018-19.
"Our situation changed (this year). Our team changed completely. He didn't have the first half that would give him a lot of attention and then he played well in the second half," said John, referring to Max's 0.896 save percentage in 47 games this season.
"He's a pretty even keel guy. He had some surgery at the end of the season on his shoulder, so he's in the midst of rehabbing that. His focus is on next season. When it comes to draft day he'll be paying a little bit more attention on the Saturday of the draft."
By keeping his focus on next season, Max is controlling all that he can, and working to be in the best shape he can to contribute to his team in 2019-20.
"I'm very happy for him," John said. "He's been probably everything - even a little bit more - than I expected he could be when we drafted him."