CZ 427 then AA 3544 at O'Hare
Anchorage → Chicago → Detroit
Timetable, Chicago time
18:22CZ 427 from Anchorage at the gate
13:30AA 3544 to Detroit leaves the gate
19 h 08 apart on the timetable, overnight
AA 3544 leaves 19 h 08 after CZ 427 arrives on the timetable: more than half a day, so not a connection we count.