Is YMMB that much busier now than it was in the 70s and 80s? I don’t recall such Byzantine ATC complications in those days when there were a host of charter and freight operations running along with numerous busy flying schools.
Ahhh....the halcyon days of an inbound call and a base call and flying with your eyes and ears wide open seem to have gone.
A bygone era when ATC was razor sharp, helpful and possessed superhuman powers of SA.