Whether a person incurs excommunication for communicating with one who is excommunicated?

❌ Objection 1 : It would seem that a person does not incur excommunication for communicating with one who is excommunicated. For a heathen or a Jew is more separated from the Church than a person who is excommunicated. But one does not incur excommunication for communicating with a heathen or a Jew. Neither, therefore, does one for communicating with an excommunicated Christian.

❌ Objection 2 : Further, if a man incurs excommunication for communicating with an excommunicated person, for the same reason a third would incur excommunication for communicating with him, and thus one might go on indefinitely, which would seem absurd. Therefore one does not incur excommunication for communicating with one who is excommunicated.