Ping Salvation. I am trying to get a Catholic reply...
That's the Catholic answer.
Wanna argue over something you heard in the past knock yourself out but there is no other Catholic answer no matter what a priest, nun, deacon, or even pope may have told you.
It used to be that priests had to request the faculty to remit the excommunication from the bishop on a case by case basis, so the penitent typically had to confess twice, once to request the faculty and once to receive it.
I believe that now Pope Francis has extended the faculty to remit the penalty to all priests in confession, so it's effectively like confessing any other sin.