It may be that Confession was started and since the guy is unrepentant, no absolution could be given. The priest cannot say anything about Confession.
If a priest ever reveals what went on in confession he is automatically excommunicated.
He cannot do it.
And it’s not a matter of declaration of excommunication, it’s a matter of not being in communion with the church, and receiving communion in that state adds to the sin, ditto nancy Pelosi.