UA 3908 then UA 4513 at O'Hare
Fort Myers → Chicago → Green Bay
Timetable, Chicago time
14:19UA 3908 from Fort Myers at the gate
13:30UA 4513 to Green Bay leaves the gate
23 h 11 apart on the timetable, overnight
UA 4513 leaves 23 h 11 after UA 3908 arrives on the timetable: more than half a day, so not a connection we count.