CA 3103 then UA 5172 at O'Hare
Anchorage → Chicago → Colorado Springs
Timetable, Chicago time
08:55CA 3103 from Anchorage at the gate
21:00UA 5172 to Colorado Springs leaves the gate
12 h 05 apart on the timetable
UA 5172 leaves 12 h 05 after CA 3103 arrives on the timetable: more than half a day, so not a connection we count.