yep.
think we are agreed on that redbar 1 ...was really thinking of the pilot instructor reference made by glueball.
think if its simply similarly qualified only safety pilot..having no other function than a pair of eyes and not touching the controls and not a FI/FE then i would have to agree it seem unlikely one could or should log the time.
would it qualify for a ''mutual'' situation. i know thats normally thought of in terms of two instructors doing time for their course....i wonder...