Originally Posted by
WayUpInTheAir
.....My point is that I had a naive understanding about their alliance partnership and what it means in practice. Apparently it's just a mechanism for code-sharing and frequent flier program benefits, and that's where it ends, despite the Star Alliance hyperbole...
That is, sadly, correct!

There is also lounge sharing.
The computer systems are
not linked up in any special way. In fact, some don't even use the same system. LH, a Star Alliance member, uses the same system as BA, a OneWorld member.
Originally Posted by
WayUpInTheAir
.........(Especially since neither UA or NZ wanted to discuss compensation for the inconvenience while the problem was occurring)............
UA is the one who delayed your flight and caused all the issues; UA is the one who you can seek compensation from, not NZ.@:-) You can write to UA Customer Relations.