UA 4592 then UA 2005 at O'Hare
Omaha → Chicago → Charlotte
Timetable, Chicago time
20:36UA 4592 from Omaha at the gate
19:58UA 2005 to Charlotte leaves the gate
23 h 22 apart on the timetable, overnight
UA 2005 leaves 23 h 22 after UA 4592 arrives on the timetable: more than half a day, so not a connection we count.