UA 202 then DL 2322 at Atlanta
Chicago O'Hare → Atlanta → Omaha
Timetable, Atlanta time
12:14UA 202 from Chicago O'Hare at the gate
11:00DL 2322 to Omaha leaves the gate
22 h 46 apart on the timetable, overnight
DL 2322 leaves 22 h 46 after UA 202 arrives on the timetable: more than half a day, so not a connection we count.