Al Kimel presents and comments on an exchange in First Things between two Catholic theologians one of whom, Alyssa Pitstick, asserts that "the Christ whom Balthasar proposes descended into Sheol is not the same Christ whom the pre-Reformation and Catholic tradition professes descended to the limbo of the fathers." If so, then vB is a heretic and hence cannot be accounted Catholic. I don't believe that, but the issues raised in the exchange are worth discussing for the sake of deepening the Church's understanding of this aspect of the Paschal Mystery.
Comment here.