UA 1669 then B6 1397 at Boston
Newark → Boston → Atlanta
Timetable, Boston time
12:26UA 1669 from Newark at the gate
11:50B6 1397 to Atlanta leaves the gate
23 h 24 apart on the timetable, overnight
B6 1397 leaves 23 h 24 after UA 1669 arrives on the timetable: more than half a day, so not a connection we count.