UA 4592 then FX 1317 at O'Hare
Omaha → Chicago → Memphis
Timetable, Chicago time
20:36UA 4592 from Omaha at the gate
20:20FX 1317 to Memphis leaves the gate
23 h 44 apart on the timetable, overnight
FX 1317 leaves 23 h 44 after UA 4592 arrives on the timetable: more than half a day, so not a connection we count.