I liked Part 1 a lot, but I definitely agree that the show was done a disservice by splitting it up. As an individual episode it was basically inscrutable, but it seems like the sort of thing that will make way more sense in the context of the two-parter.
The stuff with Angela was fantastic, and I really dug the dreamlike structure of it all. Made me question how much of what we were seeing was being filtered through Eliott. It's clear that Esmail is hyperaware of the various fan theories and possibilities of where this could go. I remember reading a theory a couple of weeks ago that Eliott = Joanna, and I don't think it's insignificant that the very first thing we saw after "MIND AWAKE, BODY ASLEEP" was her with her baby (who, in the Eliott = Joanna theory, would be completely fabricated)
I was working on an idea last week that Eliott's dad and Angela's mom are both still alive. The more I think about it, we were never really given specifics about what went wrong in the first place at the Washington Township plant, and the way Whiterose and Price talk about it, it's clear that it still holds a lot of value to them. Whiterose specifically has been skirting around the idea of alternate realities and timelines a lot this season, and the phrase that she used when talking about their parents was how they gave their lives "to help humanity achieve the next level." I'm thinking maybe they were the pioneers for some sort of reality/time-jumping project, and are in another dimension? There are only so many things that Whiterose could have shown Angela to make her "believe" in the project, and one of those would certainly be a glimpse of her mother.
In any case, I think things are about to get really weird. I'm nervous, because it's really, really easy to fuck up a show about time travel and multiple realities (a line that, say, Fringe walked with varying degrees of success). On the other hand, it'd be a really ambitious turn, and I'm confident in Esmail to at least continue to pull it off stylistically.
Of course, I could be wrong about all of this, and what we're seeing is what we're getting.