B6 2120 then LX 22 at Boston
San Diego → Boston → New York JFK
Timetable, Boston time
05:00B6 2120 from San Diego at the gate
15:00LX 22 to New York JFK leaves the gate
10 h apart on the timetable
The last days
B6 2120 and LX 22 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.