Free Visits?

[BJ Moose]

Off Mngr in 3rd base coach box asks for and gets TIME. He comes down to confer with batter.

DURING this time, does the DEF Manager or coach have a right to a FREE trip out to the mound? Assuming that DEF coach can get out there, break, and return to dugout prior to end of OFFENSE conference.

I understand in FED this is allowed, meaning not a charged conference. But my interest is under OBR. I say a trip is a trip. Even if we are stopped to watch the BLUE ANGELS fly overhead... a visit to the mound is a visit and is charged. Opinions, or better yet, is there a rule or interp on this?