AA 3815 then UA 5752 at O'Hare
Hartford → Chicago → Detroit
Timetable, Chicago time
20:15AA 3815 from Hartford at the gate
19:47UA 5752 to Detroit leaves the gate
23 h 32 apart on the timetable, overnight
UA 5752 leaves 23 h 32 after AA 3815 arrives on the timetable: more than half a day, so not a connection we count.