UA 2434 then O3 384 at LAX
Newark → Los Angeles → Shenzhen
Timetable, Los Angeles time
09:16UA 2434 from Newark at the gate
04:42O3 384 to Shenzhen leaves the gate
19 h 26 apart on the timetable, overnight
O3 384 leaves 19 h 26 after UA 2434 arrives on the timetable: more than half a day, so not a connection we count.