UA 5192 then AA 3466 at O'Hare
Jacksonville → Chicago → Mosinee
Timetable, Chicago time
17:30UA 5192 from Jacksonville at the gate
15:00AA 3466 to Mosinee leaves the gate
21 h 30 apart on the timetable, overnight
AA 3466 leaves 21 h 30 after UA 5192 arrives on the timetable: more than half a day, so not a connection we count.