AA 803 then AA 3793 at Miami
Las Vegas → Miami → New Orleans
Timetable, Miami time
13:44AA 803 from Las Vegas at the gate
17:18AA 3793 to New Orleans leaves the gate
3 h 34 apart on the timetable
The last days
AA 803 and AA 3793 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.