VS 21 then UA 5025 at Dulles
London → Washington → Morgantown
Timetable, Washington time
17:40VS 21 from London at the gate
12:40UA 5025 to Morgantown leaves the gate
19 h apart on the timetable, overnight
UA 5025 leaves 19 h after VS 21 arrives on the timetable: more than half a day, so not a connection we count.