WN 3057 then BA 212 at Boston
Nashville → Boston → London
Timetable, Boston time
19:05WN 3057 from Nashville at the gate
18:35BA 212 to London leaves the gate
23 h 30 apart on the timetable, overnight
BA 212 leaves 23 h 30 after WN 3057 arrives on the timetable: more than half a day, so not a connection we count.