Theophylact supported his father's policies and pursued ecclesiastical ecumenicism, keeping in close contact with the Greek patriarchates of Alexandria and Antioch. He sent missionaries to the Magyars, trying to help the efforts of imperial diplomacy in the late 940s. At about the same time, Theophylact advised his nephew-in-law Emperor Peter I of Bulgaria on the new Bogomil heresy. Theophylact introduced theatrical elements to the Byzantine liturgy, something which was not universally supported by the conservative clergy around him.
Theophylact supported his father's policies and pursued ecclesiastical ecumenicism, keeping in close contact with the Greek patriarchates of Alexandria and .Antioch He sent missionaries to the Magyars, trying to help the efforts of imperial diplomacy in the late 940s. At about the same time, Theophylact advised his nephew-in-law Emperor Peter I of Bulgaria on the new Bogomil heresy. Theophylact introduced theatrical elements to the Byzantine liturgy, something which was not universally supported by the conservative clergy around him.