Finished it today. Wouldn't say it's that's bad, I kinda like Mae and Lenny. And if we must keep having Zula content, it's smart to make her a supporting non-POV character. But these books are just wheel-spinning and teasing the next empty adventure ad infinitum, like others have said here. And yeah, I don't like making the synths consciousness-hopping Cylons, I liked them better when they were more like replicants. Not too crazy about the idea of the Jackals, it's too comic-booky and escapist. It could work if handled a little differently, maybe.
The Xenomorphs are sort of just there and not really especially scary or doing anything interesting (kinda like in Romulus IMO).
I didn't read Inferno's Fall so I was lacking a bit of context, but it doesn't seem like anything consequential actually happens in either book.