WN 261 then DL 821 at Atlanta
Tampa → Atlanta → Boston
Timetable, Atlanta time
19:40WN 261 from Tampa at the gate
18:30DL 821 to Boston leaves the gate
22 h 50 apart on the timetable, overnight
DL 821 leaves 22 h 50 after WN 261 arrives on the timetable: more than half a day, so not a connection we count.