radiocomm question

Had a dual flight the other day at RDU (runway diagram link at bottom
for reference). We requested runway 14 for departure, and ground told
us "taxi to runway 14 via Juliet, Charlie, hold short of 23L" (we were
departing from the general aviation ramp).

So I taxied out, eventually holding short of 23L on Charlie. The
instructor asked if I was going to switch to tower. I told him no,
that we weren't at 14 yet. He insisted that since we were holding
short of 23L that we needed to contact the tower to get across. I
disagreed.

So he called the tower and reported us as "holding short of 23L."
After a landing aircraft rolled by, tower told us to taxi to 14 and
cleared us for takeoff.

In 18 years of flying, I've never run across this before. Is this
something new, peculiar to RDU, or was he just mistaken? Whenever I've
been in this situation before, ground always was the one to tell me to
cross a runway and taxi on to my departing runway. Granted, it could
be the same controller just on a different freq....


http://204.108.4.16/d-tpp/0802/00516AD.PDF