AA 3815 then UA 5474 at O'Hare
Hartford → Chicago → Saginaw
Timetable, Chicago time
20:15AA 3815 from Hartford at the gate
19:45UA 5474 to Saginaw leaves the gate
23 h 30 apart on the timetable, overnight
UA 5474 leaves 23 h 30 after AA 3815 arrives on the timetable: more than half a day, so not a connection we count.