WN 3057 then DL 973 at Boston
Nashville → Boston → Atlanta
Timetable, Boston time
19:05WN 3057 from Nashville at the gate
19:00DL 973 to Atlanta leaves the gate
23 h 55 apart on the timetable, overnight
DL 973 leaves 23 h 55 after WN 3057 arrives on the timetable: more than half a day, so not a connection we count.