BR 646 then UA 5172 at O'Hare
Anchorage → Chicago → Colorado Springs
Timetable, Chicago time
06:51BR 646 from Anchorage at the gate
21:00UA 5172 to Colorado Springs leaves the gate
14 h 09 apart on the timetable
UA 5172 leaves 14 h 09 after BR 646 arrives on the timetable: more than half a day, so not a connection we count.