BA 67 then AA 5980 at Philadelphia
London → Philadelphia → Buffalo
Timetable, Philadelphia time
16:15BA 67 from London at the gate
16:07AA 5980 to Buffalo leaves the gate
23 h 52 apart on the timetable, overnight
AA 5980 leaves 23 h 52 after BA 67 arrives on the timetable: more than half a day, so not a connection we count.