DL 257 then DL 5679 at Boston
Amsterdam → Boston → Louisville
Timetable, Boston time
14:13DL 257 from Amsterdam at the gate
09:55DL 5679 to Louisville leaves the gate
19 h 42 apart on the timetable, overnight
DL 5679 leaves 19 h 42 after DL 257 arrives on the timetable: more than half a day, so not a connection we count.