Wombat Watcher and Res Bunny.
The interest in HBA-CHC-HBA originated in Ansett and was marketed as the Southern Connection. Flight numbers were QF due to Qantas being the only designated International Airline. Due to the 2 airline policy both Ansett and TAA operated the service.
Ps1. There was an interesting rumour that a TAA B727-200 made contact with a man made object after lift-off on R/W12 on one occasion.
Ps2. There was also a B737-200 service for a period operated by New Zealanders.