AA 4464 then UA 5191 at O'Hare
New Orleans → Chicago → Lancaster
Timetable, Chicago time
13:57AA 4464 from New Orleans at the gate
08:50UA 5191 to Lancaster leaves the gate
18 h 53 apart on the timetable, overnight
UA 5191 leaves 18 h 53 after AA 4464 arrives on the timetable: more than half a day, so not a connection we count.