We’ll just have to wait and see to be honest. I don’t know why they couldn’t divorce while the Queen’s alive, it would be more problematic and bad for it to be under Charles’s reign since he isn’t that popular and he’s gonna have to rely on the Cambridges and Harry to not just make him look better but to help with duties as well. It would look worse for it to happen under Charles’s reign, than the Queen’s.
I agree with the 2023 timeline for Charles becoming king, but that doesn’t mean the coronation will happen in 2023. Maybe 2024 for that.