The Kuchner story is weird. He and Flynn met the Russian Ambassador in Trump Towers on December 1 or 2 so Flynn is NSC adviser. Kuchner requests using the secret communications in the Russian embassy to communicate directly with the Kremlin.And Flynn just says go ahead. The Russian ambassador wondered whether he was naive or ignorant about the FBI intercepting his communications.
Remember the other "secret" communications was Eric Prince's meeting in the Sechylles.
What was so important to communicate?