Sure but they dont mix Champions League statistics with that of the UEFA Cup. Close but not the same thing.
i didn't realize the NHL was in charge of UEFA.
seriously though, they're 2 seperate governing bodies of their respective sports. They can't be compared to each other in how they decied to govern those sports.
The NHL decieded to have a one time "play-in" series to maximize profits by allowing some of the stronger TV markets admission in the playoffs, that otherwise would not have made the playoffs in a regular NHL season (Chicago, and Montreal being the examples). The NHL is a heavily gate driven league and by not having fans in the stands, this was their stratagy to to minimize some of the finacial cost of the Pandemic. That all being said, those play-in rounds, were, for all intents and purposes, playoff series, and the stats obtained in them should be counted toward career playoff stats.