SAT is not the same as satellite
It is an acronym
Q never said anything about satnav which I believe is a British term. What Q did say over and over again is Q wrote acronyms in all caps and words in lowercase or with a single initial capital. There have been several times when Q used an abbreviation in a way thast had two meanings,
SAT is likely one of those,
Talking about sat relay to the end user is just silly, because telecoms used sat relay in the 60's and it had problems of delay and quality. Nowadays we use fiber optic cables to connect cell relay transmitters.
So SAT relay must be something other than satellites.