ET 3608 then UA 4576 at O'Hare
Anchorage → Chicago → St Louis
Timetable, Chicago time
07:16ET 3608 from Anchorage at the gate
22:00UA 4576 to St Louis leaves the gate
14 h 44 apart on the timetable
UA 4576 leaves 14 h 44 after ET 3608 arrives on the timetable: more than half a day, so not a connection we count.