CI 5234 then AA 3547 at O'Hare
Anchorage → Chicago → St Louis
Timetable, Chicago time
19:25CI 5234 from Anchorage at the gate
16:50AA 3547 to St Louis leaves the gate
21 h 25 apart on the timetable, overnight
AA 3547 leaves 21 h 25 after CI 5234 arrives on the timetable: more than half a day, so not a connection we count.