AA 4960 then UA 4645 at O'Hare
South Bend → Chicago → Fort Wayne
Timetable, Chicago time
14:40AA 4960 from South Bend at the gate
11:25UA 4645 to Fort Wayne leaves the gate
20 h 45 apart on the timetable, overnight
UA 4645 leaves 20 h 45 after AA 4960 arrives on the timetable: more than half a day, so not a connection we count.