DL 2231 then DL 2273 at Salt Lake City
Chicago O'Hare → Salt Lake City → Cincinnati
Timetable, Salt Lake City time
10:10DL 2231 from Chicago O'Hare at the gate
10:05DL 2273 to Cincinnati leaves the gate
23 h 55 apart on the timetable, overnight
DL 2273 leaves 23 h 55 after DL 2231 arrives on the timetable: more than half a day, so not a connection we count.