BR 620 then UA 2487 at LAX
Taipei → Los Angeles → Chicago O'Hare
Timetable, Los Angeles time
01:37BR 620 from Taipei at the gate
14:21UA 2487 to Chicago O'Hare leaves the gate
12 h 44 apart on the timetable
UA 2487 leaves 12 h 44 after BR 620 arrives on the timetable: more than half a day, so not a connection we count.