UA 5192 then AA 4442 at O'Hare
Jacksonville → Chicago → Madison
Timetable, Chicago time
17:30UA 5192 from Jacksonville at the gate
13:25AA 4442 to Madison leaves the gate
19 h 55 apart on the timetable, overnight
AA 4442 leaves 19 h 55 after UA 5192 arrives on the timetable: more than half a day, so not a connection we count.