chyron8472 said:
The original version of the film ought to be considered as the version that was first theatrically released. That means, in this case, that there are 3 original audio mixes. Neither one is more original than the other.
You would have had me convinced if all three mixes were worked on simultaneously. But they worked on the 35mm stereo first, the 70mm stereo second, and the mono third.