Air New Zealand Air Points - I'm confused as usual regarding segment credit

I try to get gold status on NZ thru segment runs.

In looking at the airpoints handbook, I see that business class on an *A carrier is 370 credits per segment.

If you make 3 stops on the way from LHR to AKL does that mean you get 1480 airpoints?

Also if you fly on a *A codeshare but on NZ metal do you get the 370 points?

No. LHR-AKL in business is 370 airbucks in total. AFAIK there is no *A codeshare for LHR-AKL. If you take eg UA LHR-LAX then NZ LAX-AKL you get a different earning amount based on the mixed airline earning table.