Originally Posted by
Lllahim
They could not have cleared the YVR - SYD portion at the start of the YYZ-YVR window unless your request coincided with departure time for YVR-SYD.
It did not clear because it was R0 YYZ-SYD, not for any other reason. It was also R0 YVR-SYD when that window opened several hours later.
AC 33/34 are anomalies because of the schizophrenic way AC handles them (along with YYZ-SCL-EZE). It's both a direct flight (if booked that way) and two individual segments for other traffic.
And of course the other anomaly is AC 34, when the window does not open at T-7 due AC's inability to deal with the time difference issues. But OLCI does open at T-24. Go figure.