Everything is interesting when it's all new, so Robin will have to remain an active lead if he wants the both of them to end up at the same place. And Phalanx is fine with being lead--they can pay even less attention to where they're walking when someone else is minding that part of the travel.

It's only when they're getting quite close to the ramshackle tent that anything changes, and it's that their feet begin to drag once they get a good look at the frightening woman and her drum.