If that happens pog or rog will push with Vingegaard to make time(try to eliminate) in the other opponent.It's going to be difficult for everyone. For Jonas as well, now that Pog is not the only one he needs to watch/drop. Imagine the scenario where Vinge attacks and drops either Pog or Rog (but only one of them). What does he do then? Continue pushing and risk a counter from the one that stayed. Of course there's a chance he's strong enough to drop everyone but if he isn't it's going to get very tactical in 2024 IMO.
At least it would be the most logical thing to do, and then the other two in the front will fight for the victory. I don't think the main goal is just assure that vingegaard don't win the Tour.