DL 2709 then AA 2667 at Houston
Atlanta → Houston → Philadelphia
Timetable, Houston time
13:23DL 2709 from Atlanta at the gate
12:46AA 2667 to Philadelphia leaves the gate
23 h 23 apart on the timetable, overnight
AA 2667 leaves 23 h 23 after DL 2709 arrives on the timetable: more than half a day, so not a connection we count.