UA 3375 then UA 5071 at O'Hare
St Louis → Chicago → Paducah
Timetable, Chicago time
13:30UA 3375 from St Louis at the gate
12:14UA 5071 to Paducah leaves the gate
22 h 44 apart on the timetable, overnight
UA 5071 leaves 22 h 44 after UA 3375 arrives on the timetable: more than half a day, so not a connection we count.