Cursory search of fanedit.org/ifdb doesn’t turn up any fanedits that are a single, OT-combining film except The Man Behind The Mask’s “Star Wars 30’s Serial Edition: Part 2”, which has no voices.

I do recall at one point watching a fanedit that combined all 6 films into one long one, but I don’t now remember what it was called and it wasn’t very good. The flash-forward segments which transitioned from one prequel to the next were jarring; and the OT moments flew by so quickly I kept wanting it to slow down and take time to flesh out the OT story more.