QF 1511 then QF 691 at Melbourne
Sydney Kingsford Smith → Melbourne → Adelaide
Timetable, Melbourne time
17:35QF 1511 from Sydney Kingsford Smith at the gate
16:55QF 691 to Adelaide leaves the gate
23 h 20 apart on the timetable, overnight
QF 691 leaves 23 h 20 after QF 1511 arrives on the timetable: more than half a day, so not a connection we count.