I get that, the 2nd half of the 1st book is the plot for season 2, to a degree. There is a lot is switching between characters points in there, which does make you wanna read faster to get back to the point. But in the show it can make the thing feel a bit slow.

The 2nd book in the series is supposed to show pre-silo times, like 350 years pre season 1 - which was the jarrging switch at the end. I also wasnt the biggest fan of that bit, until the Pez dispenser came out. But I think season 3 will have more of those flashes. Interesting to see how thatll hold viewers