It's plumbed to the elbow.I would believe because it's getting sucked dry by the engine/vacuum.
How i had mine setup up before (couple days ago) i had the driver's side VC nipple to a catch can then vent to ATMO. That's why it was getting all that shit smoking under the hood. It would accumulate everything that is supposed to be burnt off by the engine.
Is your driver side valve cover plumbed to your intake elbow or plenum? Does it matter? That was one of my questions. I wouldn't think so?? (post or after throttle body)
When I say dry I mean there is no sign of oil vapor
It's why very few people run a catch can on the driver's side.
I've got a few thousand miles and 3 years on the 2.9 making 24lbs and 700+. So it's not exactly a new setup.
It's plumbed like this.