QF 621 then JQ 476 at Melbourne
Brisbane → Melbourne → Williamtown
Timetable, Melbourne time
13:50QF 621 from Brisbane at the gate
13:30JQ 476 to Williamtown leaves the gate
23 h 40 apart on the timetable, overnight
JQ 476 leaves 23 h 40 after QF 621 arrives on the timetable: more than half a day, so not a connection we count.