I noticed that the only way to transfer audio from 1 body to another is via an electrical cable, or radio. This is a problem because it means either radios need to be installed, or a player is required to disconnect the two bodies.

I am making a jet with an ejection seat, and am now forced to use an external microphone and speaker to have radio contact, as the seat doesn't have space for a radio, and a cable would prevent an ejection.