DL 854 then B6 1396 at Atlanta
Springfield → Atlanta → Boston
Timetable, Atlanta time
18:14DL 854 from Springfield at the gate
15:38B6 1396 to Boston leaves the gate
21 h 24 apart on the timetable, overnight
B6 1396 leaves 21 h 24 after DL 854 arrives on the timetable: more than half a day, so not a connection we count.