Nuns don't tell the Pope where to go; but, the Apostles sent Peter forth. Paul sternly corrected Peter in front of others, many witnesses. This would be insubbordination if Peter were his leader, it is not viewed as such. Paul took Mark away from Peter, See II Timothy. Mark was Peter and Paul sent for him. That this was honored is evidenced in the absence of Mark in the writing of II Peter. Another major flub for ya'll. Who is Paul to take away an aid to Peter to be an aid for himself by simply sending someone to make it so. There are more examples. But, I don't see nuns sending the pope anywhere, correcting his errors and taking his aids as they please.
correction:
Mark was with Peter ..
Just thought I'd fix that to save confusion lest you raise my typo to the level of a new religious truth..