I truly have no idea. I know what I'd speculate it may have been: some sort of arrangement whereby Hannity used Cohen as a conduit for arranging to "kiss Trump's ass" and then stick his head way the hell up inside it.
What do you imagine they discussed?
Hannity can speak to a lawyer about anything he wants or needs to. He has an expectation of privacy just as anyone else.
What is frightening is watching some of the kooks in the media who were salivating over this "revelation", Some even asking for his job without ANY information. What a bunch of participation ribbon, easily breakable, order taking patsies. Even state run patsy CBC got excited over it. I swear these weaklings wouldn't survive a day with any struggles.
Hannity should mock them continually for the next month. What an embarrassment.