Sounds like it is a potential leak IMO that needs addressing. The border needs to be 'watertight' as per the PMs wording. I would have thought it was common sense for them to at least self isolate, if they are interacting with the public on those flights, some who are coming in who are still testing positive. We know that non-symptomatic people can pass it on. We also have to remember that most cases in NZ can be traced back to people coming into NZ on planes, so we have to learn from what has occurred prior to the lockdown that allowed it to spread.
It always puzzled me that they see two rows ahead and 2 behind as vulnerable, but cabin crew walk everywhere