BA 213 then DL 5634 at Boston
London → Boston → Pittsburgh
Timetable, Boston time
14:20BA 213 from London at the gate
14:15DL 5634 to Pittsburgh leaves the gate
23 h 55 apart on the timetable, overnight
DL 5634 leaves 23 h 55 after BA 213 arrives on the timetable: more than half a day, so not a connection we count.