As it turns out, it seems this is exactly what happened between Three SSPX priests — Fr. Todd Angele, Fr. Herve de la Tour and Fr. Kenneth Novak in Kansas and Peter Palmeri. Seems they all refused to help one of Palmeri's abuse victims, who was molested from age 8–15.
I was under the impression that they received information outside the Confessional. Even the CM report admitted that Father Novak advised the man who spoke to him to inform the authorities. If that man refused, Father Novak himself could not do much, since his information was hearsay from said man. I got the impression that this man DID then go to the authorities who, for whatever reason, did not take action. CM implies that it was because they too were under pressure from some quarters, but they cited no evidence for this. Fr. Todd Angele has categorically denied the claim that he advised them NOT to tell the authorities because it would cause scandal. And perhaps there was a he-said-she-said angle to this case where there was little corroborating proof. Who knows? All I know is that CM did an incredibly sloppy job with the deliberate aim of making everyone look as guilty as possible ... including the insinuation that Fr. Novak broke up marriages due to romantic designs for the disaffected wife.