WN 856 then B6 1396 at Atlanta
Austin → Atlanta → Boston
Timetable, Atlanta time
15:55WN 856 from Austin at the gate
15:38B6 1396 to Boston leaves the gate
23 h 43 apart on the timetable, overnight
B6 1396 leaves 23 h 43 after WN 856 arrives on the timetable: more than half a day, so not a connection we count.