CK 221 then Y4 711 at LAX
Shanghai → Los Angeles → Mexico City
Timetable, Los Angeles time
10:00CK 221 from Shanghai at the gate
00:24Y4 711 to Mexico City leaves the gate
14 h 24 apart on the timetable, overnight
Y4 711 leaves 14 h 24 after CK 221 arrives on the timetable: more than half a day, so not a connection we count.