AA 2407 then AV 2352 at San Francisco
Philadelphia → San Francisco → Burbank
Timetable, San Francisco time
11:35AA 2407 from Philadelphia at the gate
08:40AV 2352 to Burbank leaves the gate
21 h 05 apart on the timetable, overnight
AV 2352 leaves 21 h 05 after AA 2407 arrives on the timetable: more than half a day, so not a connection we count.