UA 1333 then O3 384 at LAX
Chicago O'Hare → Los Angeles → Shenzhen
Timetable, Los Angeles time
08:36UA 1333 from Chicago O'Hare at the gate
04:37O3 384 to Shenzhen leaves the gate
20 h 01 apart on the timetable, overnight
O3 384 leaves 20 h 01 after UA 1333 arrives on the timetable: more than half a day, so not a connection we count.