God cannot be measured or counted. That then necessitates avoidance of any form of Semi-/Full Sabellianism, whether dynamic, sequential, modal, or otherwise. And it necessitates the preclusion of any creative economy for the Son, whether at procession or conception. There is only one answer, and it lies in knowing what God's Rhema is. The Father is not the Son is not the Father (are not the Holy Spirit). But they cannot be distinct as hypostases, especially since the alleged multiple hypostases must be both quantitatively AND qualitatively distinct. (Father unbegotten, Son eternally begotten, HS eternally proceeding.). The eternality of the Son is the eternality of the Logos. They're coterminous.