DL 1264 then DL 1509 at Atlanta
Chicago O'Hare → Atlanta → Houston Hobby
Timetable, Atlanta time
08:28DL 1264 from Chicago O'Hare at the gate
08:16DL 1509 to Houston Hobby leaves the gate
23 h 48 apart on the timetable, overnight
DL 1509 leaves 23 h 48 after DL 1264 arrives on the timetable: more than half a day, so not a connection we count.