UA 4592 then AA 1715 at O'Hare
Omaha → Chicago → Austin
Timetable, Chicago time
20:36UA 4592 from Omaha at the gate
19:45AA 1715 to Austin leaves the gate
23 h 09 apart on the timetable, overnight
AA 1715 leaves 23 h 09 after UA 4592 arrives on the timetable: more than half a day, so not a connection we count.