Multiple other factors, though, as when Kasia was isolated with Bradbury dropped and Fisher-Black went to the front, that seemed like the time to force it, and it did work.
As you say, perhaps too well. But the problem is making it more or less a 1-stage race meant people behind had something to fight for still. Other things that had a small effect, but cumulative effects include that Cédrine Kerbaol descended like a demon to rejoin the Kasia group, and then led it down helping them on the descent, that Demi decided to wait for Rooijakkers to collaborate on the flat, slowing herself down on the descent, then got stroppy when Rooijakkers, a dreadful time trialist, turned out not to be that good on the flat, which killed the collaboration between them. Then the fact that they were hanging at a close enough gap that Évita Muzic had enough reason to believe that she could make the podium if one of the riders up front collapsed to collaborate with Kasia meant that she wasn't just doing it all on her own.