From what I understood of the report, NZ was super prepared and the early stages of the pandemic were straight from that plan and were delivered pretty well. That's the first two or three months. But then the plan was gone, elimination didn't work for Delta, and there was no plan B so they were making it up, changing strategies, and poorly communicating what they were trying to do.
Basically, we had a great initial plan that went well, but after that they were winging it and it was a bit of a mess.