QF 1989 then VA 424 at Sydney
Townsville → Sydney → Adelaide
Timetable, Sydney time
18:00QF 1989 from Townsville at the gate
14:30VA 424 to Adelaide leaves the gate
20 h 30 apart on the timetable, overnight
VA 424 leaves 20 h 30 after QF 1989 arrives on the timetable: more than half a day, so not a connection we count.