CV 251 then AA 3111 at O'Hare
Anchorage → Chicago → St Louis
Timetable, Chicago time
19:00CV 251 from Anchorage at the gate
09:30AA 3111 to St Louis leaves the gate
14 h 30 apart on the timetable, overnight
AA 3111 leaves 14 h 30 after CV 251 arrives on the timetable: more than half a day, so not a connection we count.