DL 9976 then WN 1849 at Boston
Miami → Boston → San Diego
Timetable, Boston time
02:50DL 9976 from Miami at the gate
08:00WN 1849 to San Diego leaves the gate
5 h 10 apart on the timetable
The last days
DL 9976 and WN 1849 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.