CA 8443 then UA 2844 at O'Hare
Anchorage → Chicago → St Louis
Timetable, Chicago time
16:59CA 8443 from Anchorage at the gate
10:45UA 2844 to St Louis leaves the gate
17 h 46 apart on the timetable, overnight
UA 2844 leaves 17 h 46 after CA 8443 arrives on the timetable: more than half a day, so not a connection we count.