B6 1223 then DL 2101 at LAX
New York JFK → Los Angeles → Chicago O'Hare
Timetable, Los Angeles time
23:46B6 1223 from New York JFK at the gate
09:45DL 2101 to Chicago O'Hare leaves the gate
9 h 59 apart on the timetable, overnight
The last days
B6 1223 and DL 2101 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.