JQ 8991 then JQ 776 at Melbourne
Sydney Kingsford Smith → Melbourne → Adelaide
Timetable, Melbourne time
14:30JQ 8991 from Sydney Kingsford Smith at the gate
14:25JQ 776 to Adelaide leaves the gate
23 h 55 apart on the timetable, overnight
JQ 776 leaves 23 h 55 after JQ 8991 arrives on the timetable: more than half a day, so not a connection we count.