I've kind of undersold that a bit, actually a lot of those issues WERE right out there with Olivia being angry at Peter for not knowing the difference, and then the episode before last had a storyline about Olivia finding out that yes, Peter did have feelings for the other her. But in the course of this episode, those issues were mostly glossed over - probably because they're both pretending/believing that the Other Olivia is never coming back anyway.

Basically they did a reasonable job of giving us Olivia's perspective but I'm genuinely uncertain if I was suppose to be as irked as I was with the way Peter avoided dealing with the subject. How they handle that in the future remains to be seen...