Ofc they planned the olympics. Very much so. The wheels thing from WVA was being planned in the winter. Remco worked hard on his allready phenomal aero. In fact, last year, when the 2024 planning was being made for Remco, and the big TDF or not discussion was going on, people close to him and the team told me several times the olympic gold was what Remco had in mind most of all. Good route for him, close to home, only every 4 years, might not happen again.
Just both of them falling first disrupted the planned scenario's, WVA riding the tour in a desperate attempt to get up to pace again, Remco first racing to get to a 100% and then performing superbly but having to dig deep for 3 weeks....
So both of them (WVA even more) were not ideally where they wanted to be in that last week before the ITT. Remco stated he only started to get his legs back on friday.
Compare that to the route of Ganna and Tarling, they both had almost perfect prep. And ofc they would have planned for rain to, it just ads an x factor, that I think helped the riders coming from the TDF. Just my thought, not a fact.