Live iPhone Camera to iPad without WiFi or Cellular Solution

This might not be a thing (no luck searching for a solution), but seems theoretically possible!

I would like to have my camera (front facing selife camera) appear as a live feed on my iPad either through bluetooth or internal wifi or AirPlay, but without bringing WiFi or Cellular data into the equation.

(Long story, but using a teleprompter as an "EyeDirect" for a documentary shoot in the field)

Maybe there's an app that does this, or some sneaky way to "mirror" my iPhone screen on the iPad? Audio doesn't need to come through, just the live image.

Thanks in advance to anyone that might be able to figure this puzzle out!