AA 3842 then DL 454 at DFW
Springfield → Dallas-Fort Worth → New York JFK
Timetable, Dallas-Fort Worth time
07:40AA 3842 from Springfield at the gate
07:35DL 454 to New York JFK leaves the gate
23 h 55 apart on the timetable, overnight
DL 454 leaves 23 h 55 after AA 3842 arrives on the timetable: more than half a day, so not a connection we count.