The case is certainly an isolated one and is hardly conceivable for German colleagues. One reason, however, is certainly that the relationship between judges and lawyers in Italy is much tenser than in Germany. Unlike in Germany, they are competing professions with separate professional training.
While in Germany, for example, judges generally treat each other like colleagues and have no inhibitions about calling each other on the phone with organisational questions, Italian judges exude an aura of aloofness.