UA 4263 then AA 2414 at Dulles
Syracuse → Washington → Dallas-Fort Worth
Timetable, Washington time
16:30UA 4263 from Syracuse at the gate
14:42AA 2414 to Dallas-Fort Worth leaves the gate
22 h 12 apart on the timetable, overnight
AA 2414 leaves 22 h 12 after UA 4263 arrives on the timetable: more than half a day, so not a connection we count.