B6 1097 then DL 3507 at Atlanta
Boston → Atlanta → Shreveport
Timetable, Atlanta time
11:06B6 1097 from Boston at the gate
11:00DL 3507 to Shreveport leaves the gate
23 h 54 apart on the timetable, overnight
DL 3507 leaves 23 h 54 after B6 1097 arrives on the timetable: more than half a day, so not a connection we count.