Though I do not have a transcript of their probably private conversation, the Extended ROTK and ROTS endings have a very similar feel and flow, unless you’ve never seen the former, I’m sure others here know what I’m talking about.
I have seen the extended ROTK, and i’m not sure what you’re talking about. What is the equivalent of the ROTS Padme/Vader crosscutting in ROTK?
Both movies do a multiple ending/wrap up sequences thing, but that’s different.
And TPM beat Jackson to the punch as far as multipronged climaxes go.