AA 3004 then UA 2301 at Charlotte
Miami → Charlotte → Newark
Timetable, Charlotte time
08:25AA 3004 from Miami at the gate
13:45UA 2301 to Newark leaves the gate
5 h 20 apart on the timetable
The last days
AA 3004 and UA 2301 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.