AA 4504 then DL 5327 at O'Hare
South Bend → Chicago → Detroit
Timetable, Chicago time
18:35AA 4504 from South Bend at the gate
11:19DL 5327 to Detroit leaves the gate
16 h 44 apart on the timetable, overnight
DL 5327 leaves 16 h 44 after AA 4504 arrives on the timetable: more than half a day, so not a connection we count.