B6 160 then AA 4425 at Boston
Philadelphia → Boston → Buffalo
Timetable, Boston time
08:20B6 160 from Philadelphia at the gate
08:00AA 4425 to Buffalo leaves the gate
23 h 40 apart on the timetable, overnight
AA 4425 leaves 23 h 40 after B6 160 arrives on the timetable: more than half a day, so not a connection we count.