From what I can tell, the NHL likes giving the Stanley Cup champs a 2mo layoff. If that's the case, we know the Cup's going to be awarded sometime late Sept or by Oct 4th which is the date I recall Bettman claiming is the latest possible date for a Stanley Cup Finals game like a Game 7.
I imagine Bettman or Daly will announce a delay to the 2020-21 season immediately after the Finals if they need to. That should give FNHL enough time to hold or push back the October 26th Entry draft date. That's my 2 cents.