What is the disagreement as you understand it?
A couple of thoughts come to mind. One time years ago the abbess of the monastery outside my maternal village asked my wife, “What is the difference between The Church in the West and The Church in the East?” She replied, “In the West The Church says ‘Do this or you will go to hell.” In the East, The Church says ‘Do this and you will become like God.”
My grandmother used to tell me that Orthodoxy isn’t a “religion” or a denomination like in the West. It is life itself for us. It defines who we are. It is the lens through which we interpret the world.