yekke2:
It’s a nice pshat, but there is nothing in Ollivander’s words that indicate it and there is a lot in Ollivander’s words that indicate against it. If that is really how it works then I don’t have such a big problem. The big problem is that Harry formed the plan based on what Ollivander told him and Ollivander told him nothing of the sort of what you are saying.
Stam a kashya on your pshat would be that Gindelwald didn’t defeat Gregorovitch; he just stole the wand.