PJ2,
the trim wheel moves with trim changes in either manual or auto flight. It is in motion, quite frequently, with the small speed/pitch changes that normally occur
Thanks for your answer. Then, there is perhaps a (remote) possibility that a PNF could suspect inadequate pitch inputs by the PF by noticing from the corner of an eye the trimwheel moving in an unexpected way. This is probably irrelevant, however, in a tight situation.