PX 1 then JQ 525 at Sydney
Port Moresby → Sydney → Melbourne
Timetable, Sydney time
16:40PX 1 from Port Moresby at the gate
16:25JQ 525 to Melbourne leaves the gate
23 h 45 apart on the timetable, overnight
JQ 525 leaves 23 h 45 after PX 1 arrives on the timetable: more than half a day, so not a connection we count.