TyphilliO

I've been reading the many Duneverse novels and I'm missing something. I read about Rhombur, Tessia and Bronso at the assassination attempt at Leto's wedding on Caladan but then the next mention I come across is after the fall of Kaitan when Paul isn't surprised House Vernius doesn't attend his Landsraad meeting considering their past. Did I skip a book somewhere? Which book covers Atreides/Vernius interaction between the two times I just mentioned?