Q. Was the Holy Trinity the “Holy Duo” while Christ was in the flesh?
A. Here’s a reply from Father Reginald Martin:
The Catechism of the Catholic Church is unequivocal in its statement of Catholic belief in the two natures of Jesus: “The unique and altogether singular event of the Incarnation of the Son of God does not mean that Jesus Christ is part God and part man, nor does it imply that he is … a confused mixture of the divine and human. He became truly man while remaining truly God” (No. 464). This means that throughout the years the human Jesus spent among us on earth, the Divine Christ was never separated from the Father and Holy Spirit in heaven. The Incarnation added something to God’s Word, but detracted nothing from the Trinity.
This is, to be sure, a challenging proposition, appropriately named a “mystery.”