UA 6053 then O3 384 at LAX
Seattle (SEA) → Los Angeles → Shenzhen
Timetable, Los Angeles time
09:01UA 6053 from Seattle (SEA) at the gate
04:42O3 384 to Shenzhen leaves the gate
19 h 41 apart on the timetable, overnight
O3 384 leaves 19 h 41 after UA 6053 arrives on the timetable: more than half a day, so not a connection we count.