Yeah, I don’t remember the specific books but there is a specific thing that I thought was brilliant. One book follows an Astartes that starts to suspect heresy in their ship and he escapes it, he approaches another ship and recognizes the Astartes on the other end of the radio and confides in him about his suspicion and he lets him onboard. Then in another book you follow the story of that other Astartes, who starts to suspect heresy in the fleet and when the radio call comes it confirms his suspicions.

Not the greatest thing ever, but it was a cool thing that I don’t think I’ve seen any other book series do something similar.