What are you trying to say; that a sitting President cannot have a long discussion with the Russian leader? Why?
As usual, your ignorance is showing. Presidents conversation are recorded for posterity. When Trump talks face to face with Putin, only the Russian translator is there. For the first one, Trump had his own translator there and immediately confiscated the notes and destroyed them. After that one. no American staff or translators allowed. It is hard to believe but even Trumps conversations have historical importance. He does not care. He has so much to hide. So he talks privately to Putin for over an hour and you do not care. Maybe it was about the pee tapes. Trump always thought Russian women were beautiful. Maybe he wants Putin to set him up next meeting.