It's just one of the ways, like I said, to try to make the change seamless for a guy.
Keep this in mind too: A lot of times, with the schedule already winding down, a new player is not bringing his family with him. He is probably living in a hotel. Half the time the team is on the road.
Think about what Lehner has gone through. In less than two years, he's played for the Buffalo Sabres, New York Islanders, Blackhawks and Golden Knights. Different cities, different teammates, different environments. Day-to-day life outside the rink is so different in each of those communities. That's a lot of change to digest. It's our job to help smooth it out.
That goes for the on-ice tendencies as well. The most important thing is to find out what a guy's strengths or weaknesses are, at Ieast in terms of how he perceives them.
Just as important is how he wants to play pucks in the defensive zone. All these things go into it. Remember, points from your backup goalie could be the difference in making the playoffs.
One other aspect of this issue is helping to forge a relationship between the incoming goalie and the existing one. Lehner came to a Vegas team that had Marc-Andre Fleury, who wants to play as many games as possible. During the Pittsburgh Penguins' Stanley Cup runs of 2016 and 2017, Fleury had to battle Matt Murray for playing time. Each guy in these situations wants to play. The job of a goaltending coach is to make sure they're on the same page. Sometimes all it takes is taking them out for a few pops so they can get to know each other better and discuss things.
In many cases, it takes two goalies to win the Stanley Cup. The Chicago Blackhawks had Corey Crawford and Scott Darling in 2015. The Penguins had Fleury and Murray in 2016 and 2017. The Washington Capitals had Braden Holtby and Philipp Grubauer in 2018. In each of those playoff runs, both goalies started games.
It makes sense that each goalie feels at home. And I'm sure that's what the Golden Knights, Maple Leafs and Canucks are trying to achieve.