CZ 435 then AA 2997 at O'Hare
Anchorage → Chicago → Washington National
Timetable, Chicago time
15:58CZ 435 from Anchorage at the gate
06:59AA 2997 to Washington National leaves the gate
15 h 01 apart on the timetable, overnight
AA 2997 leaves 15 h 01 after CZ 435 arrives on the timetable: more than half a day, so not a connection we count.