Actually, I depend on that next tier. I can mumble through something and he can articulate it clearly in his own words. I can map out a plan and he can put it into action. Sometimes I make notes for a debriefing and he can execute it to near perfection.
Maybe the best model is simply handing over the car keys, not as if I'd ever owned something from the beginning. My only advantage is that I think I see a road that can get us to where we want to go. I'll help map it out, point out the dangers and help with maneuvering skills, but at the end of the day, I don't think I should be driving.