
Scholastic Theological Arguments give me a nervous tick.
They are sometimes necessary, just like cleaning a clogged toilet.
But, prolonged practice of both is dangerous for precisely the same reason.
Theology, Ethics, and Spirituality centered on the Trinity and Incarnation, experienced through Theosis, in Sacramental Life, leading to Apokatastasis, explored in maximally inclusive ways. And other random stuff.

The short answer is that we believe that Christ is really present in the sacrament of Communion. To understand this, we must remember what a "sacrament" is. The prayer book defines it as "an outward and visible sign of an inward and spiritual grace" (BCP 1979 pp. 357-361). In short, it is a physical thing, like bread, wine, water, oil, that God uses to share the presence and power of Jesus Christ, through the working of His Spirit.