AA 3815 then AA 2708 at O'Hare
Hartford → Chicago → Houston
Timetable, Chicago time
20:15AA 3815 from Hartford at the gate
17:10AA 2708 to Houston leaves the gate
20 h 55 apart on the timetable, overnight
AA 2708 leaves 20 h 55 after AA 3815 arrives on the timetable: more than half a day, so not a connection we count.