AA 337 then 7L 789 at O'Hare
Dallas-Fort Worth → Chicago → New York JFK
Timetable, Chicago time
12:08AA 337 from Dallas-Fort Worth at the gate
16:007L 789 to New York JFK leaves the gate
3 h 52 apart on the timetable
The last days
AA 337 and 7L 789 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.