AA 2178 then DL 1662 at Salt Lake City
Dallas-Fort Worth → Salt Lake City → Las Vegas
Timetable, Salt Lake City time
10:17AA 2178 from Dallas-Fort Worth at the gate
23:15DL 1662 to Las Vegas leaves the gate
12 h 58 apart on the timetable
DL 1662 leaves 12 h 58 after AA 2178 arrives on the timetable: more than half a day, so not a connection we count.