Ah the good old days when the tired pilots would hand over control to the RHS. Remember one trip when just after rotate the captain said you have control.......he had been told that we get grumpy when we dont get to fly too much...... but not that soon after rotate we talked about it and he was much happier with the real story.
Not that unusual actually. I was a staff pilot on Doms 87-92 and quite a few of the LLTS Nav Instructors were quite useful pilots. With one of them I usually had my hands on the control column twice each sortie - once to unlock the flying controls before take-off and once to lock them again after landing. My Navigating was far more dangerous than his flying.