DL 1245 then DL 2398 at Atlanta
Indianapolis → Atlanta → New York JFK
Timetable, Atlanta time
20:08DL 1245 from Indianapolis at the gate
15:16DL 2398 to New York JFK leaves the gate
19 h 08 apart on the timetable, overnight
DL 2398 leaves 19 h 08 after DL 1245 arrives on the timetable: more than half a day, so not a connection we count.