DL 3747 then DL 1667 at Salt Lake City
Sacramento → Salt Lake City → Denver
Timetable, Salt Lake City time
22:07DL 3747 from Sacramento at the gate
21:35DL 1667 to Denver leaves the gate
23 h 28 apart on the timetable, overnight
DL 1667 leaves 23 h 28 after DL 3747 arrives on the timetable: more than half a day, so not a connection we count.