CZ 435 then AA 4189 at O'Hare
Anchorage → Chicago → Missoula
Timetable, Chicago time
17:05CZ 435 from Anchorage at the gate
09:40AA 4189 to Missoula leaves the gate
16 h 35 apart on the timetable, overnight
AA 4189 leaves 16 h 35 after CZ 435 arrives on the timetable: more than half a day, so not a connection we count.