AA 3073 then B6 1187 at Boston
Philadelphia → Boston → Los Angeles
Timetable, Boston time
17:21AA 3073 from Philadelphia at the gate
15:45B6 1187 to Los Angeles leaves the gate
22 h 24 apart on the timetable, overnight
B6 1187 leaves 22 h 24 after AA 3073 arrives on the timetable: more than half a day, so not a connection we count.