DL 2743 then DL 4632 at Atlanta
Tampa → Atlanta → Chicago O'Hare
Timetable, Atlanta time
06:45DL 2743 from Tampa at the gate
11:05DL 4632 to Chicago O'Hare leaves the gate
4 h 20 apart on the timetable
The last days
DL 2743 and DL 4632 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.