Going to take a gues this is footage from the battle for endor, mixed into ROTJ
Quality sleuthing, Holmes.
Ive never seen BFE or COC, it was just a wild gues, tbh it looks very well intergrated, im wonderinf if they shot near the same redwoods area they did for ROTJ, and iirc COC reuses jabbas palace’s set, and has it redecorated
His “Holmes” jab was because your “guess” was explicitly stated in the first sentence of the OP.