Two years ago, I took my time watching The OA. Not so much with Part 2; I got through in about 24 hours. Part 1 left me so confused, and while there are more questions now, I think I have a much better understanding. Of course that probably just means I’m extremely confused. The show is absolutely brilliant.
Do not click the next two links unless you’ve watched every episode because there are a ton of spoilers. These are good reads with ideas about where the future of the show may go.