Maybe two different interpositives, or two different print runs? I know I've also heard that LPP and Fuji have different tendencies to them (Fuji is supposedly more purple? I've seen some SW SE film cells that look purplish...)
And I know how I talk about how prints I'd seen of 80s/90s films had more teal, not just pure blue, and fire and explosions and stuff looked yellow instead of orange (Beber's various descriptions of 35mm screenings of 80s/90s films match with the kind of stuff I've seen), but I also saw a print of John Carpenter's The Thing that had blue blues without much teal at all, and a good bit of orange in all the fire we see in the film. (Yes, it was likely a repertory print struck much later, but still, these repertory prints always seem to be fully timed, or struck from an earlier-generation element that does have the theatrical timing.)
Also, I've seen film cells on eBay UK of various films that say AGFA-Gevaert, not Eastman LPP. Maybe Eastman, Fuji and/or Agfa prints of films during a theatrical run looked somewhat different from one another?
So you could both be right.