CZ 435 then AS 587 at O'Hare
Anchorage → Chicago → Seattle (SEA)
Timetable, Chicago time
15:58CZ 435 from Anchorage at the gate
07:00AS 587 to Seattle (SEA) leaves the gate
15 h 02 apart on the timetable, overnight
AS 587 leaves 15 h 02 after CZ 435 arrives on the timetable: more than half a day, so not a connection we count.