AA 3340 then UA 5191 at O'Hare
Nashville → Chicago → Lancaster
Timetable, Chicago time
12:40AA 3340 from Nashville at the gate
08:50UA 5191 to Lancaster leaves the gate
20 h 10 apart on the timetable, overnight
UA 5191 leaves 20 h 10 after AA 3340 arrives on the timetable: more than half a day, so not a connection we count.