The following were appointed, along with Archbishop Costelloe:
– Monsignor Piero Coda, Secretary General of the International Theological Commission;
– Gaby Alfred Hachem, Professor of Theology at the Université Saint-Esprit de Kaslik, Lebanon;
– Giuseppe Bonfrate, Full Professor of the Pontifical Gregorian University in Rome;
– Father Paul Béré, S.J., Professor of Sacred Scripture at the Pontifical Biblical Institute.
It is worth noting that in March 2023 Archbishop Costelloe was appointed by Pope Francis among the members of the Preparatory Commission for the 16th Ordinary General Assembly of the Synod of Bishops.