WN 2973 then DL 5679 at Boston
Baltimore → Boston → Louisville
Timetable, Boston time
15:40WN 2973 from Baltimore at the gate
10:25DL 5679 to Louisville leaves the gate
18 h 45 apart on the timetable, overnight
DL 5679 leaves 18 h 45 after WN 2973 arrives on the timetable: more than half a day, so not a connection we count.