AA 6258 then UA 5191 at O'Hare
Albany (New York) → Chicago → Lancaster
Timetable, Chicago time
13:50AA 6258 from Albany (New York) at the gate
08:50UA 5191 to Lancaster leaves the gate
19 h apart on the timetable, overnight
UA 5191 leaves 19 h after AA 6258 arrives on the timetable: more than half a day, so not a connection we count.