@svit
It's due to Rogla being in leaders jersey hence in theory it's their job to control the gap. Said that an IMHO other teams should have responded to riders like Florian not gaining any significant time, they chose not to.
Plan A, other teams, hence being do absolutely nothing and wait till the stage we will make our move. Considering Rogla likely being isolated relatively easily and considering a bad day can happen for everybody, Rogla IMHO wasn't in best place at this race. Team IMHO can't support him in leaders jersey for the whole three weeks.
So i feel the scenario that happened was only partially planned up front. They managed to give away the jersey, have Florian high in GC and other teams now must ride actively if they want to at least finish on the podium.
As for the dilemma if O'Connor gained too much time, or not, best to wait and see. If there would be no such dilemma involved, then other teams would still stick to plan A.