UA 424 then CI 5239 at O'Hare
Boise → Chicago → Anchorage
Timetable, Chicago time
17:05UA 424 from Boise at the gate
13:00CI 5239 to Anchorage leaves the gate
19 h 55 apart on the timetable, overnight
CI 5239 leaves 19 h 55 after UA 424 arrives on the timetable: more than half a day, so not a connection we count.