I've concluded it's an odd book. Probably because I never did a chapter-by-chapter outline, the story seems to flow in strange ways; or maybe it's just that I have too many characters. I seem to have skimped on transitions and setups, to some extent, dropping in on one group, then another. Not sure how this will work out for readers. It's too late to change it, now.
Re-reading, I'm reminded of writing music without bar lines.