DL 12 then DL 1634 at LAX
Melbourne → Los Angeles → Chicago O'Hare
Timetable, Los Angeles time
05:55DL 12 from Melbourne at the gate
17:59DL 1634 to Chicago O'Hare leaves the gate
12 h 04 apart on the timetable
DL 1634 leaves 12 h 04 after DL 12 arrives on the timetable: more than half a day, so not a connection we count.