I pulled the couch, and sure enough, the corner of the couch had mangled one of the vents.
I swapped a couple of hoses so they wouldn't have to overlap to reach their destination; the tricky one it the top right in the picture. That needs to route straight down then along the back of sofa to not get maimed by the back of the couch:
Shown with couch pulled away:
The seatbelt bolts add to the fun, and i did contemplate running one hose on top of the belts and bolts, but i got the hoses to lay flat so they're only brushed by the couch back when you open/close it. I'm going to look for registers to put on the board the vents exhaust to next trip to the hardware store.