What do you mean how. Tony and Khabib fight then Conor fights the winner, meanwhile, the loser isn't getting a title shot until they work themselves back with some wins. This makes it so that Conor won't have to fight Tony and Khabib back to back, which he most certainly will lose to one of them.
What should happen is Conor fights Tony to unify the belts and then if Conor wins he fights Khabib. Instead, Conor will now only have to deal with the winner when he should be fighting Tony to unify the belts, but you know this don't you.