UA 3496 then AA 5220 at Dulles
Jacksonville → Washington → Charlotte
Timetable, Washington time
13:35UA 3496 from Jacksonville at the gate
13:24AA 5220 to Charlotte leaves the gate
23 h 49 apart on the timetable, overnight
AA 5220 leaves 23 h 49 after UA 3496 arrives on the timetable: more than half a day, so not a connection we count.