Honestly, I think he would have been SHOCKED AND APPALLED by whatever he heard in private.
I've known a few people like him.
One guy attended a meeting where we told him XYZ, we followed up the meeting in writing confirming we'd told him XYZ, and for months afterwards, we were on the receiving end of YOU SAID ABC. Solicitors got involved, and provided extra evidence that we did, in fact, say XYZ. NO, YOU SAID ABC.
He'll have heard whatever he wanted to hear in the hearing, and has incredibly poor understanding of other's perspectives. He can't possibly imagine a world in which other people hear XYZ as XYZ, not ABC.