CZ 427 then AA 489 at O'Hare
Anchorage → Chicago → Washington National
Timetable, Chicago time
18:22CZ 427 from Anchorage at the gate
17:49AA 489 to Washington National leaves the gate
23 h 27 apart on the timetable, overnight
AA 489 leaves 23 h 27 after CZ 427 arrives on the timetable: more than half a day, so not a connection we count.