Complex sentence: The joint synodal decree identified several issues that require resolution to permit a relationship of full communion, though from an ecumenical perspective it marks a major step toward full collaboration in the pastoral care of their members.
Split into simpler sentences: The joint synodal decree identified several issues that require resolution to permit a relationship of full communion. Nonetheless, from an ecumenical perspective, the joint synodal decree marks a major step toward full mutual collaboration of both churches in the pastoral care of their members.