VA 554 then QF 1990 at Sydney
Perth → Sydney → Townsville
Timetable, Sydney time
16:20VA 554 from Perth at the gate
11:10QF 1990 to Townsville leaves the gate
18 h 50 apart on the timetable, overnight
QF 1990 leaves 18 h 50 after VA 554 arrives on the timetable: more than half a day, so not a connection we count.