CZ 435 then UA 490 at O'Hare
Anchorage → Chicago → Boise
Timetable, Chicago time
15:58CZ 435 from Anchorage at the gate
08:40UA 490 to Boise leaves the gate
16 h 42 apart on the timetable, overnight
UA 490 leaves 16 h 42 after CZ 435 arrives on the timetable: more than half a day, so not a connection we count.