DL 2647 then DL 1996 at JFK
Tampa → New York → Orlando
Timetable, New York time
14:38DL 2647 from Tampa at the gate
15:10DL 1996 to Orlando leaves the gate
32 min apart on the timetable
The last days
DL 2647 and DL 1996 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.