CK 221 then UA 2409 at LAX
Shanghai → Los Angeles → Chicago O'Hare
Timetable, Los Angeles time
10:00CK 221 from Shanghai at the gate
23:47UA 2409 to Chicago O'Hare leaves the gate
13 h 47 apart on the timetable
UA 2409 leaves 13 h 47 after CK 221 arrives on the timetable: more than half a day, so not a connection we count.