CA 1011 then UA 3556 at O'Hare
Anchorage → Chicago → St Louis
Timetable, Chicago time
17:12CA 1011 from Anchorage at the gate
08:55UA 3556 to St Louis leaves the gate
15 h 43 apart on the timetable, overnight
UA 3556 leaves 15 h 43 after CA 1011 arrives on the timetable: more than half a day, so not a connection we count.