I dunno. Sometimes it's easier to simply stare at a problem & noodle your way through it. That's hard to do when forced to jibber jabber. Is the ol' stare & noodle a pair-friendly activity?
I haven't done pairing myself, but I suspect it's highly variable based on the two specific individuals. Certainly I've noted smart and capable people I work with well, and some that I don't. Not every smart/capable pair is going to mesh. Just because I respect you doesn't mean I can work well with you, especially in such an intimate set up.