UA 3922 then AA 3466 at O'Hare
Savannah → Chicago → Mosinee
Timetable, Chicago time
02:36UA 3922 from Savannah at the gate
15:00AA 3466 to Mosinee leaves the gate
12 h 24 apart on the timetable
AA 3466 leaves 12 h 24 after UA 3922 arrives on the timetable: more than half a day, so not a connection we count.