That isn't a valid routing. FJ from NZ/AU to NAN and then either Mainland USA or Honolulu will be the termination of the award. Similarly, you can't book Asia to HNL/Mainland USA on FJ through NAN.

Inter-Asia awards no longer allow a stopover. You can book SQ from MNL-TPE with a connection in SIN but you can't have a stopover there.

When SQ awards came online, there was a glitch that allowed stopovers outside of SIN and were priced at inter‐Asia award levels; a 25K J award MNL-TPE with a stopover in London, for example.

Stopovers on Inter-Asia awards were quashed pretty quickly & JL stopovers followed suit. You could fly JL J SIN-TYO-DEL for 25K, two 7+ hour flights with lie-flats, and stopover in TYO. You can still fly that route for 25K miles but you can no longer stopover in TYO.

Stopovers are still permited on SQ & JL if they include a flight to/from North America.

With CX, all awards terminate in HKG, unless you are coming from or going to North America, so you can't fly SIN-HKG-ICN for instance, that would require two awards; however you could fly CX SIN-HKG-North America, with or without a stopover in HKG. CX awards HKG-EU are also available but require a seperate award, even if from/to North America.

James