I'll check, but back then Qantas had many multi segment "direct" flight routes.
Off the top of my head, QF400 was MEL-SYD-OOL with QF475 OOL-SYD-MEL the SYD/MEL segments being the first and last flight of the day between those ports respectively. QF610/QF637 were similar for MEL-BNE-CNS & vv.