DL 169 then DL 5679 at Boston
Barcelona → Boston → Louisville
Timetable, Boston time
13:41DL 169 from Barcelona at the gate
09:55DL 5679 to Louisville leaves the gate
20 h 14 apart on the timetable, overnight
DL 5679 leaves 20 h 14 after DL 169 arrives on the timetable: more than half a day, so not a connection we count.