I was a F/E on the B727 at KBOS. Due a mixup, by ATC, IIRC, we wound up face to face with a L1011 outbound, we were inbound and both of us on the Inner or the Outer. Captain asked the FO and me what we thought. Well, a tow us gonna be wait, if it's clear to the rear, go for it. We went about 100 yards back to a transition to the Inner or the Outer. We were doing powerbacks normally then.