That seems an odd quote. Given 90% of the Tasman flying is done by Jetconnect who do no domestic flying why would they ever need to tow a JC aircraft between terminals? As to all the other duplication he mentions, well you can add to that having another subsidiary airline, AOC, pilot base, aircraft, contract, etc.
If he wants to reduce duplication across the Tasman, start by rolling Jetconnect into Qantas mainline (while protecting the jobs of the JC crew).
Maybe he wants to expanded the JetConnect empire, and use JetConnects lower cost base within Australia?