Understood,
vasco'.
But surely
someone must have thought that it was a good idea? Otherwise why change the tried and tested ways of the past, which worked well?
Alternatively the fighter maintains the control frequency on one radio (for SA on other traffic) and boom on another...
Nope - one radio for communicating with people (whether tanker or ATC/SOC) outside the fighter formation and the back box for communicating with wingmen inside the fighter formation.