UA 1224 then O3 384 at LAX
Cleveland → Los Angeles → Shenzhen
Timetable, Los Angeles time
09:12UA 1224 from Cleveland at the gate
04:37O3 384 to Shenzhen leaves the gate
19 h 25 apart on the timetable, overnight
O3 384 leaves 19 h 25 after UA 1224 arrives on the timetable: more than half a day, so not a connection we count.