The Rey Nobody edit does not use any AI voices as I understand it. They are all spliced lines from the movie itself.
I use 11 labs, but take the center channel from when the characters are speaking in the scenes I want to modify, and then run it through voice isolation software provided by RogueLeader, another member of this forum. The result is a nearly perfect voice clone.
I’m assuming Hal uses Adobe Premiere, but I could be wrong about that.