I don't think so, his process is outlined pretty well in this
Sound-On-Sound piece and he's given some interviews explaining it as well - all the EQ, compression, volume automation, etc gets done at the stereo mixing stage, then he does the spatial positioning for 5.1 or Atmos. In this case, TFF must have provided him pre-mixed stems with reverb/compression/EQ baked-in or their final DAW session for the stereo mix (which would have the raw audio files linked plus all the edits, plugins, automation, etc).
@Plan9 would likely have all the details.