UA 358 then AA 5447 at Dulles
Dallas-Fort Worth → Washington → Charlotte
Timetable, Washington time
16:20UA 358 from Dallas-Fort Worth at the gate
15:55AA 5447 to Charlotte leaves the gate
23 h 35 apart on the timetable, overnight
AA 5447 leaves 23 h 35 after UA 358 arrives on the timetable: more than half a day, so not a connection we count.