 A little later, however, he came into conflict with the Patriarch of Aquileia, .The Patriarch protested against the fact that the bishop of Zuglio, Fidentius, had moved his seat from his actual diocese to Cividale - a decision which was confirmed by Fidentius' successor, Amator.Callixtus, whose titular see was Aquileia, but who had himself moved to Cormons because Aquileia was too vulnerable to Byzantine attack, considered another bishop based in the ducal capital to be inconvenient.