DL 847 then DL 8841 at Dulles
Salt Lake City → Washington → Toronto Pearson
Timetable, Washington time
23:47DL 847 from Salt Lake City at the gate
16:00DL 8841 to Toronto Pearson leaves the gate
16 h 13 apart on the timetable, overnight
DL 8841 leaves 16 h 13 after DL 847 arrives on the timetable: more than half a day, so not a connection we count.