AA 2708 then CX 3171 at Houston
Chicago → Houston → Anchorage
Timetable, Houston time
20:06AA 2708 from Chicago at the gate
17:00CX 3171 to Anchorage leaves the gate
20 h 54 apart on the timetable, overnight
CX 3171 leaves 20 h 54 after AA 2708 arrives on the timetable: more than half a day, so not a connection we count.