DL 5693 then DL 1961 at JFK
Charlotte → New York → San Juan
Timetable, New York time
08:00DL 5693 from Charlotte at the gate
12:10DL 1961 to San Juan leaves the gate
4 h 10 apart on the timetable
The last days
DL 5693 and DL 1961 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.