Nauty S, at what point did I say I was relying solely on Centre. I use all available means to ascertain traffic including Centre, CTAF and my eyes. I simply have no intention of giving up any of these methods unless I have to.
I was ready to forget this thread but once again, it is disturbing me.
The call "Changing to CTAF 126.7" means that you are either no longer able or no longer desire to remain in contact with Centre. Once made, Centre will not pass on traffic and will not call you again unless you fail to cancel SAR within the appropriate time.
The call "Monitoring CTAF" means nothing. If you are in the CTAF for arrival in the CTAF then you had better be monitoring the CTAF. The only response such a call should get is a cringe. Centre should ask for clarification to see whether the said aircraft is in fact changing to CTAF or not.