BR 810 then BR 630 at Taipei
Hong Kong → Taipei → Los Angeles
Timetable, Taipei time
23:35BR 810 from Hong Kong at the gate
04:00BR 630 to Los Angeles leaves the gate
4 h 25 apart on the timetable, overnight
The last days
BR 810 and BR 630 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.