

You are contradicting yourself.
Hitler left orders not to be awakened so he slept in on D-Day. Rommel had left his post. Think that wouldn’t have changed things?
Stalin had dozens of warnings that Hitler planned to invade. What if he’d taken even one seriously?
What if Hitler had let the Army get the glory at Dunkirk and steamrolled the troops on the beach?
I can think of dozens of times the course of the War changed by the actions of one person.
it could not have happened and would not have happened, for essentially economic reasons.
The interesting alternative histories are ones that turn on a single fortuitous event.
You said it couldn’t happen, then said that there are ways it could have happened.
Also, if you don’t want to be part of the discussion, you are free to stay out. other people are participating and enjoying themselves.