OO 6076 then UA 5901 at O'Hare
Owensboro → Chicago → St Louis
Timetable, Chicago time
15:40OO 6076 from Owensboro at the gate
15:20UA 5901 to St Louis leaves the gate
23 h 40 apart on the timetable, overnight
UA 5901 leaves 23 h 40 after OO 6076 arrives on the timetable: more than half a day, so not a connection we count.