I don't see how that is not either Nestorianism or Docetism. What was born was not a "side" or a "nature" but a person, i.e. the Second Person of the Trinity.
I don't know what you both are talking about. Christ the Word was never born. Jesus the Christ was born to Mary. Both are true. How do you explain this without distinguishing the divine from the human?
So let me get this straight: God the Word was physically in the Womb, yet something else other than Him passed through the birth canal?
That's Nestorianism. There are not *two* Christs: "Christ the Word" and "Jesus the Christ". There is only one Christ. And that Christ is eternal and also born.
-A8