So my MEL-SYD leg of my MEL-SYD-LAX-YYZ got canceled. I got stuck in Australia an extra day. An amazing UA supervisor in MEL spent 6 hours with me and took care of me. There were 200 displaced passengers. Most could not get flights out of Australia for two more days.
In the end, they put me on QF from MEL-SYD and then I flew AC from SYD-YVR-YYZ.
Reflections: Qantas is really nice. I would love to fly international with them on their A380 some day. Air Canada business is basically just as good as United global first class.