Codeshares with AA are not a big issue now they’ve re-aligned the SC / points earn post JV. Earn rates are pretty much identical.
Anyway I’m sure they will, they’re code sharing on AKL-LAX.
I wonder if there’s any chance AA could continue on to Australia - perhaps DFW-AKL-BNE and LAX-CHC-MEL. I’m guessing they don’t want to rock the boat after the QF/NZ deal (although that doesn’t include trans Tasman). Also with QF codeshare connections I guess they don’t need to.
AA won't need to, they could alternatively apply for codeshare on Trans-Tasman (not sure about the logistics of that considering the QF/AA JV between AU and USA).