AA 2155 then CZ 2502 at O'Hare
Hartford → Chicago → Shanghai
Timetable, Chicago time
14:10AA 2155 from Hartford at the gate
13:55CZ 2502 to Shanghai leaves the gate
23 h 45 apart on the timetable, overnight
CZ 2502 leaves 23 h 45 after AA 2155 arrives on the timetable: more than half a day, so not a connection we count.