fact
In QR CC is above flight deck dont you know ?
Try it argue with some "favorit" CC and you will see after who has more authority you or her . lol lol
QR is only airline in the world when capt tell somthing to CC they will not do it if CSD dont agree .
So yes its only a CC .
command in QR :
1.CSD
2.R1
3.Capt.
4.red cup
5.BC
6.Engeneer
7.F/O