UA 362 then AA 565 at Miami
Houston → Miami → Charlotte
Timetable, Miami time
11:33UA 362 from Houston at the gate
15:51AA 565 to Charlotte leaves the gate
4 h 18 apart on the timetable
The last days
UA 362 and AA 565 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.