Pardon my ignorance, but I'd sure like to know which quests are designed to take over 8 rounds. I make a write-up of all the quests we play (I also take pictures, which allow me to turn them into small stories), and the only encounter in which we reached round 8 was the first part of Reclamation. I couldn't find any where we reached round 7, and then we had quite a few where we reached round 6.
We never reached round 9 or 10, ever.
Though base campaign quests are quite short, that's true.