UA 350 then AA 3079 at Philadelphia
Chicago O'Hare → Philadelphia → San Francisco
Timetable, Philadelphia time
14:17UA 350 from Chicago O'Hare at the gate
13:45AA 3079 to San Francisco leaves the gate
23 h 28 apart on the timetable, overnight
AA 3079 leaves 23 h 28 after UA 350 arrives on the timetable: more than half a day, so not a connection we count.