Something I never really thought about until a moment ago while looking at the Batman Forever - The Official Comic Adaptation and the Batman '89 (2021) comic series...
Batman Forever is listed as a sequel to
Batman and
Batman Returns, and while the actor playing Batman changes he's meant to be the same Batman.
However, Two-Face also changed since Harvey Dent was originally played by Billy Dee Williams. Not the sort of change you'd likely see occur in a movie series created in more recent times.
The 2021 Batman '89 series ignored
Batman Forever and
Batman & Robin, and reinstated Billy Dee Williams in the role:
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