I've done a few of these.
Last week did AKL-OOL-AKL, with 1hr on the ground at OOL. Last month did AKL-NLK-AKL with 1hr on the ground at NLK.
Further afield, have done MIA-AUA-MIA, with a very quick overnight (same plane in/out). Also done AKL-LAX-AKL on the same plane, with about 10hrs at...