Comment by karmakaze

Maybe this is a misconception or misrepresentation of pair-programming, at least compared to my experience. One person isn't supposed to be doing both. You're either navigating/explaining or driving/doing. Pair programming isn't about one person doing everything and another person watching and trying to keep up. It's about communicating and sharing an understanding, like a realtime/interactive PR description/review while writing. Of course there are times where one person will simply say "let me write this out and discuss after" and go at it for a short while, but it should be the exception rather than the rule in settings where it worked best for me.