In Christ there is one nature of two natures, without mingling, without confusion, and without alteration. This is the nature of the Word who became Man. The Church equally rejects the Nestorian concept of Christ being two persons, and the faith of Eutyches who proclaimed that His humanity was swallowed up by His divinity or was dissolved in it.
Through the unofficial and official dialogues between the Chalcedonian Orthodox and the non-Chalcedonian Orthodox, both affirmed their rejection of both the Nestorian and the Eutychian understandings. Further, both families asserted their rejection of any division or confusion between His divinity and His humanity.