Data point: I booked 40k SFO NAN BNE in Y and 55k AKL NAN (3-night stopover) SFO in J for October/November two nights ago. The J return availability on Nov 2 and 5 no longer shows.

I was really hoping to find both in J and in the reverse order of SFO NAN stopover, visiting NZ, then departing BNE for home, but I'm happy to arrive in BNE just in time for a DO. And I'll swap AKL for WLG if by some miracle it becomes available before March 1st.

Oh, and I discovered why the first two weeks of October were a no-go - their national Fiji Day holiday is October 10.