For example the small moment in Ep4 where Leia takes Obi-Wan’s hand. Compare it to the Ep5 scene of them escaping Vader on Roken’s crowded ship and I see the faint chance that moment could be spliced together with the Ep5 escape, inserted before Roken sits down to talk to Kenobi. The discrepancies in the slightly too empty seats around them could maybe be obscured, but the only issue would be Obi-Wan’s slight costume change.
Both the opening and closing videos above include pieces of ep. 4, including Leia taking Obi’s hand. Great minds think alike!