Asking it to “explain how GPS works like I’m a seasoned engineer” yields a more detailed explanation and there’s no mention of GPS terminals sending messages back to the satellites.

Probably the “false output” you mentioned is due to the fact that the prompt asked to “explain it like I’m five”, which made ChatGPT answer with a “dialogue between terminal and satellite” explanation, which (arguably) may be better understood by a 5 years old.