Chuck, yes, you are correct. It is blowby from the PCV system, going back into the air intake elbow, and blown through the charge pipe. It is a tiny amount and won't show up as oil consumption, but can look ugly as it weeps out the gasket. It helps a little if you disconnect & plug the EGR and the turbo ARV. A new gasket with a thin coat of Hylomar sealant should cure the leak, after careful cleaning of the sealing surfaces.
