AA 2866 then UA 5025 at Dulles
Dallas-Fort Worth → Washington → Morgantown
Timetable, Washington time
18:19AA 2866 from Dallas-Fort Worth at the gate
12:40UA 5025 to Morgantown leaves the gate
18 h 21 apart on the timetable, overnight
UA 5025 leaves 18 h 21 after AA 2866 arrives on the timetable: more than half a day, so not a connection we count.