Is my airway too big for me to have the Vivos DNA Appliance?

Hello I have tiny upper and lower jaws. My jaw-surgeon said I am a candidate for double jaw surgery. So, I had a CBCT taken which showed that my airway is bigger than normal. When I asked, she said that the surgery will increase the size of my airway, but I am still a candidate for the surgery. I showed the CBCT to a dentist who uses the DNA. She said that I cannot have it because it expands the airway and my airway is too big.(Yet I can have the jaw surgery which does the same!)Is she right?