DL 5389 then DL 821 at Atlanta
Bloomington-Normal → Atlanta → Boston
Timetable, Atlanta time
19:12DL 5389 from Bloomington-Normal at the gate
18:30DL 821 to Boston leaves the gate
23 h 18 apart on the timetable, overnight
DL 821 leaves 23 h 18 after DL 5389 arrives on the timetable: more than half a day, so not a connection we count.