CI 5234 then UA 5790 at O'Hare
Anchorage → Chicago → St Louis
Timetable, Chicago time
19:25CI 5234 from Anchorage at the gate
13:00UA 5790 to St Louis leaves the gate
17 h 35 apart on the timetable, overnight
UA 5790 leaves 17 h 35 after CI 5234 arrives on the timetable: more than half a day, so not a connection we count.