When the Trinity Advanced was being developed a few years ago there were a handful of different versions floating around under the “TechDev” label, being ridden mostly by Team Columbia at the time.
This looks like one of the early frames that went on to become the Trinity we see today.
Yeah, being a Trinity Advanced SL owner myself, that is most definitely what it is. The goofy “through the front brake” routing of the cables is the give away.
If I were Fuji, I’d be pretty peeved that he rode someone else’s bike and was still 2+ minutes back. That said, I’d guess that there’s a new TT bike coming from Fuji in the future, so maybe they didn’t mind so much?