I did a return award YVR-AKL, AKL-LAX-YVR on ANZ in Nov/Dec. Booked about 6 weeks before. I was extremely flexible for dates and that was pretty much all I could find but was really excited I was able to book on ANZ after years of no availability. They seemed to have released (in low season) seats 2 months out. Or it could have been a cancellation.