CV 12 then UA 4412 at O'Hare
Anchorage → Chicago → St Louis
Timetable, Chicago time
19:11CV 12 from Anchorage at the gate
17:45UA 4412 to St Louis leaves the gate
22 h 34 apart on the timetable, overnight
UA 4412 leaves 22 h 34 after CV 12 arrives on the timetable: more than half a day, so not a connection we count.