Reuniting Eastern and Oriental Orthodox Churches
The four adverbs used to qualify the mystery of the hypostatic union belong to our common tradition - without commingling (or confusion) (asyngchytos), without change (atreptos), without separation (achoristos) and without division (adiairetos).
Those among us who speak of two natures in Christ, do not thereby deny their inseparable, indivisible union; those among us who speak of one united divine-human nature in Christ do not thereby deny the continuing dynamic presence in Christ of the divine and the human, without change, without confusion.
Our mutual agreement is not limited to Christology, but encompasses the whole faith of the one undivided church of the early centuries. We are agreed also in our understanding of the Person and Work of God the Holy Spirit, Who proceeds from the Father alone, and is always adored with the Father and the Son.
The British Orthodox Church has on their website the documents agreed to by the East and the Orient regarding their commonly held beliefs. Within those documents it states that language misunderstandings — not actual heresy — split the Orthodox Church long ago.
May God heal what man has split asunder.