DL 847 then UA 3634 at Dulles
Salt Lake City → Washington → Charlotte
Timetable, Washington time
20:03DL 847 from Salt Lake City at the gate
09:00UA 3634 to Charlotte leaves the gate
12 h 57 apart on the timetable, overnight
UA 3634 leaves 12 h 57 after DL 847 arrives on the timetable: more than half a day, so not a connection we count.