The pilot can always ask ATC for navigational assistance, but they
can't provide an inflight snack.

OTFL

I've been asking this
question for nearly ten years now and nobody has identified one yet.

Why do you keep asking this question? Surely it is not to acquire
information, or to dispense any. Rather, you seem to be pressing the
point that "use" and "rely on" are not the same.

Do you think this is a point not understood by other participants here?

Jose
--
He who laughs, lasts.
for Email, make the obvious change in the address.