QF 436 then QF 2121 at Sydney
Melbourne → Sydney → Griffith
Timetable, Sydney time
12:05QF 436 from Melbourne at the gate
06:05QF 2121 to Griffith leaves the gate
18 h apart on the timetable, overnight
QF 2121 leaves 18 h after QF 436 arrives on the timetable: more than half a day, so not a connection we count.