AA 6059 then UA 225 at Philadelphia
Providence → Philadelphia → San Francisco
Timetable, Philadelphia time
17:16AA 6059 from Providence at the gate
16:38UA 225 to San Francisco leaves the gate
23 h 22 apart on the timetable, overnight
UA 225 leaves 23 h 22 after AA 6059 arrives on the timetable: more than half a day, so not a connection we count.