WN 3057 then B6 1187 at Boston
Nashville → Boston → Los Angeles
Timetable, Boston time
19:05WN 3057 from Nashville at the gate
15:45B6 1187 to Los Angeles leaves the gate
20 h 40 apart on the timetable, overnight
B6 1187 leaves 20 h 40 after WN 3057 arrives on the timetable: more than half a day, so not a connection we count.