AA 4996 then UA 4645 at O'Hare
Cedar Rapids → Chicago → Fort Wayne
Timetable, Chicago time
12:30AA 4996 from Cedar Rapids at the gate
11:25UA 4645 to Fort Wayne leaves the gate
22 h 55 apart on the timetable, overnight
UA 4645 leaves 22 h 55 after AA 4996 arrives on the timetable: more than half a day, so not a connection we count.