TP 4399 then QR 3437 at San Francisco
Boston → San Francisco → San Diego
Timetable, San Francisco time
20:55TP 4399 from Boston at the gate
07:04QR 3437 to San Diego leaves the gate
10 h 09 apart on the timetable, overnight
The last days
TP 4399 and QR 3437 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.