AA 1898 then AA 4638 at Miami
New Orleans → Miami → Tampa
Timetable, Miami time
13:31AA 1898 from New Orleans at the gate
17:51AA 4638 to Tampa leaves the gate
4 h 20 apart on the timetable
The last days
AA 1898 and AA 4638 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.