If it was said in confession and not some other setting, I don’t think he can say anything about it even if they were just discussing the weather. He can’t even confirm it took place at all, even if no sins were actually confessed, at least to my understanding.
Freegards
Correct.
In the girl's case, the Louisiana courts said it was a question of fact as to whether what was going on "were confessions per se". If the trial court has made findings on that, I haven't seen them.