B6 1397 then DL 2381 at Atlanta
Boston → Atlanta → Houston Hobby
Timetable, Atlanta time
15:59B6 1397 from Boston at the gate
15:15DL 2381 to Houston Hobby leaves the gate
23 h 16 apart on the timetable, overnight
DL 2381 leaves 23 h 16 after B6 1397 arrives on the timetable: more than half a day, so not a connection we count.