This whole thought experiment is based on the Vuelta, not really a representation of a normal tour.This is one of the main benefits, for Rogla. Now when riding at the Tour, once Jonas or Pogi or Remco ... attacks. Rogla, or one of the Bora team members, can react instantly. This was not possible any more, for Rogla, riding for JV and participating at the Tour. So the way it worked at JV is Rogla would lose seconds here and there. To Jonas and possibly others. Due to team racing for Jonas and his preferences. That is not on how Rogla races. Rogla doesn't give seconds away. And that is in the end usually enough. With Bora Rogla should again be able to race like that. As in the end he only needs 1s on Jonas. If Jonas is the one to finish second.
Non of the captains have any helpers in the end, unless they are in trouble, it's been this way the last two years. The team is used elsewhere not closing Jonas og Pog on the big days, they can't.