Due to the 2018 Moscow–Constantinople schism, Arsenios's Russian counterpart has not been in attendance of any meetings held by the archdiocese.

[4][6] Due to the strict measures put in place due to the Covid-19 pandemic, Arsenios began administering the Holy Communion separately, as opposed to traditional orthodox practices of serving wine and bread within the same chalice and spoon.

[6] The Metropolitan has focused his efforts on proselytizing and has enjoyed good relations with the Catholic Church, and has worked towards mending the schism.

[9] He blessed Lake Constance with the bishop of Vorarlberg in a ceremony as a part of his pastoral tour in 2025.

[10] Metropolitan Arsenios has also worked with other religious leaders in Austria to help combat prejudice and encourage interfaith dialogue.