DL 1728 then DL 660 at Atlanta
Chicago Midway → Atlanta → Salt Lake City
Timetable, Atlanta time
20:10DL 1728 from Chicago Midway at the gate
19:50DL 660 to Salt Lake City leaves the gate
23 h 40 apart on the timetable, overnight
DL 660 leaves 23 h 40 after DL 1728 arrives on the timetable: more than half a day, so not a connection we count.