AA 2614 then UA 5191 at O'Hare
San Francisco → Chicago → Lancaster
Timetable, Chicago time
12:29AA 2614 from San Francisco at the gate
08:50UA 5191 to Lancaster leaves the gate
20 h 21 apart on the timetable, overnight
UA 5191 leaves 20 h 21 after AA 2614 arrives on the timetable: more than half a day, so not a connection we count.