DL 675 then WN 597 at Boston
Kansas City → Boston → Dallas
Timetable, Boston time
17:39DL 675 from Kansas City at the gate
17:35WN 597 to Dallas leaves the gate
23 h 56 apart on the timetable, overnight
WN 597 leaves 23 h 56 after DL 675 arrives on the timetable: more than half a day, so not a connection we count.