OO 6105 then AA 1253 at O'Hare
Lewisburg → Chicago → San Francisco
Timetable, Chicago time
12:37OO 6105 from Lewisburg at the gate
06:45AA 1253 to San Francisco leaves the gate
18 h 08 apart on the timetable, overnight
AA 1253 leaves 18 h 08 after OO 6105 arrives on the timetable: more than half a day, so not a connection we count.