That's the point, refs aren't allowed to comment, or hold press conferences to put their side of it, we only get one side of a conversation between 2 people in which the one that can't comment is presented in a most unfavourable light.
Meetings aren't considered private conversations, but two participants talking over the match frankly and in private, would be a text book definition of a private conversation I'd have thought.
It may well be the last private conversation that a referee has with Hansen though, as we now know that any conversation with him is likely to be repeated to the press.
I'd love it if Jaco Peyper has called Romain Poite and said, "Shag Hansen has absolutely stitched me up. We had a conversation but I didn't say I was wrong on any of those things. He's trying to play you at my expense. Get one back for the men with the whistles. If you think they're being cynical, it's because they're being cynical. And P.S. If you can see Wyatt Crockett's ass it's because he's pushing sideways in the scrum."