Again below I copy the Chalcedon definition of the hypostatic union:
unum eundemque Christum Filium dominum unigenitum, in duabus naturis
Quite the contrast with the Year of Mercy logo conflation of Christ with Adam, a monster of siamese twins joined at the head/eye. I maintain that art which needs explanation is bad art! Just like preaching which is ambiguous is bad preaching. Confusion does not come from God!
So, following the saintly fathers, we all with one voice teach the confession of one and the same Son, our Lord Jesus Christ: the same perfect in divinity and perfect in humanity, the same truly God and truly man, of a rational soul and a body; consubstantial with the Father as regards his divinity, and the same consubstantial with us as regards his humanity; like us in all respects except for sin; begotten before the ages from the Father as regards his divinity, and in the last days the same for us and for our salvation from Mary, the virgin God-bearer as regards his humanity; one and the same Christ, Son, Lord, only-begotten, acknowledged in two natures which undergo no confusion, no change, no division, no separation; at no point was the difference between the natures taken away through the union, but rather the property of both natures is preserved and comes together into a single person and a single subsistent being; he is not parted or divided into two persons, but is one and the same only-begotten Son, God, Word, Lord Jesus Christ, just as the prophets taught from the beginning about him, and as the Lord Jesus Christ himself instructed us, and as the creed of the fathers handed it down to us.
....It is opposed to those who attempt to tear apart the mystery of the economy into a duality of sons; and it expels from the assembly of the priests those who dare to say that the divinity of the Only-begotten is passible, and it stands opposed to those who imagine a mixture or confusion between the two natures of Christ; and it expels those who have the mad idea that the servant-form he took from us is of a heavenly or some other kind of being; and it anathematises those who concoct two natures of the Lord before the union but imagine a single one after the union.