This is a regular topic of conversation amongst controllers, please please believe that we are just as perplexed as you are! The stated divide between controllers and Airservices corporate is huge, we wish they would listen to us.
The fact that some boffins in Canberra issue times for "non-compliant" aircraft, and we pass them, ATC cannot actually do anything until Sydney Flow arrives and configures the sequence! How silly do we feel telling you blokes that after a long haul flight?
