On Monday 22 December 2025, AC34, the 1120 hours late morning SYD-YVR took off at 1434 mid afternoon. Arrival same day for B772LR F-LIUJ should be approximately 0928 hours, 158 minutes behind schedule. The preceding two sector AC33 had departed YYZ (Toronto, Canada not NSW!) about 100 minutes late on Saturday 20 evening, but hasn't managed to make up any time.
IIRC, this flight didn't always 'through work' to Toronto: originally it terminated in Vancouver, Canada.
Timekeeping of AC33/34 is often poor, but the aircraft is dealing with a wintry, perhaps snowy Toronto, Canada and what can be the obverse in Australia: summer storms or very hot weather on occasion.