Remember many "assistants", often do much more for the show, without setting foot on stage.
Blackstone, Sr. assistants said his brother Pete Bouton, actually ran the show, so his brother could walk on stage, knowing it was ready for him.
Ditto for Chris Kenner, who keeps the trains running on time, for David.
What an asset for Thurston, to know, George White, was THERE, for the show, onstage and off.
Or purposely anonymous invisible men, like Jim Collins, David Lustig, or Melvin _____?, whose bosses became famous, because they supposedly performed their feats, by themselves.