QF 629 then QF 454 at Melbourne
Brisbane → Melbourne → Sydney Kingsford Smith
Timetable, Melbourne time
18:00QF 629 from Brisbane at the gate
15:00QF 454 to Sydney Kingsford Smith leaves the gate
21 h apart on the timetable, overnight
QF 454 leaves 21 h after QF 629 arrives on the timetable: more than half a day, so not a connection we count.