UA 4500 then DL 8945 at Dulles
Detroit → Washington → Orlando (MCO)
Timetable, Washington time
21:17UA 4500 from Detroit at the gate
15:00DL 8945 to Orlando (MCO) leaves the gate
17 h 43 apart on the timetable, overnight
DL 8945 leaves 17 h 43 after UA 4500 arrives on the timetable: more than half a day, so not a connection we count.