Why is Jesus Christ only one person despite having two minds?

I think this question haven't been asked yet here. The teaching of Chalcedonian Christianity (including the Catholic, Eastern Orthodox, and Protestant churches) is that Jesus Christ exists as one person with two natures: divine and human, united without mixing or confusion. Thus, in Jesus Christ there is not one will (*contra Monothelism*), there is no absence of the human soul (*contra Apollinarianism*) and there is not two persons (*contra Nestorianism*). There is a new explanation just recently that is called Neo-Apollinarianism wherein it is said that Jesus had no uncreated human soul but that the divine Logos **completes** the human nature of Jesus Christ. In this view, the divine Logos underwent a change (divine mind became the soul) so that Jesus has one mind but still had two complete natures: divine and human (*pro Chalcedon*) (Source ) My question is: How to explain the doctrine that Jesus Christ is one person despite having two wills (dyothelitism) and two minds? Answers from any Chalcedonian perspective are welcome.