AC 1048 then UA 3376 at O'Hare
Vancouver → Chicago → St Louis
Timetable, Chicago time
14:37AC 1048 from Vancouver at the gate
11:00UA 3376 to St Louis leaves the gate
20 h 23 apart on the timetable, overnight
UA 3376 leaves 20 h 23 after AC 1048 arrives on the timetable: more than half a day, so not a connection we count.