CI 518 then BR 622 at Taipei
Beijing → Taipei → Los Angeles
Timetable, Taipei time
23:50CI 518 from Beijing at the gate
04:00BR 622 to Los Angeles leaves the gate
4 h 10 apart on the timetable, overnight
The last days
CI 518 and BR 622 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.