UA 3922 then AA 3415 at O'Hare
Savannah → Chicago → Moline
Timetable, Chicago time
02:36UA 3922 from Savannah at the gate
15:17AA 3415 to Moline leaves the gate
12 h 41 apart on the timetable
AA 3415 leaves 12 h 41 after UA 3922 arrives on the timetable: more than half a day, so not a connection we count.