QF 1511 then AY 146 at Melbourne
Sydney Kingsford Smith → Melbourne → Bangkok
Timetable, Melbourne time
17:35QF 1511 from Sydney Kingsford Smith at the gate
15:30AY 146 to Bangkok leaves the gate
21 h 55 apart on the timetable, overnight
AY 146 leaves 21 h 55 after QF 1511 arrives on the timetable: more than half a day, so not a connection we count.