Complex sentence: Despite the credits in both versions, Eiji Tsuburaya had nothing to do with this film, aside from the featured stock footage--the "Special Effects Supervised by" credit was given out of respect, since he was still the head of the Visual Effects Department.
Split into simpler sentences: Despite the credits in both versions, Eiji Tsuburaya had nothing to do with this film, aside from the featured stock footage. The "Special Effects Supervised by" credit was given out of respect, since he was still the head of the Visual Effects Department.