Rotorblades, excellent thread. Great to hear something constructive.
max1, thanks for a very succinct summary and reiteration of the extras which you guys manage for us.
To summarise:
the proposed 'monitoring' call alerts ATCOs that ABC, whilst monitoring both Centre and CTAF (ie. has not 'changed to CTAF'), may not give an instant response to a traffic advisory or similar. Given that a traffic separation dialogue on CTAF may take two or three calls in total, that may preclude ABC from getting back to Centre immediately. If you know we're on both comms, this extra 10-15 seconds of time to finish on CTAF, then switch and acknowledge, gives a little breathing space for all before starting INCERFA etc.
Correct me if I've misread the last 5 pages.
For a few who've posted without thinking from the other side of the PTT: think how quickly we readback 'cancel star track direct to xxx'. Hey, could have been talking on company or 6PY: guess we'd like the rotorblades of the world to try giving the shortening again in case on another comm...