UA 2764 then DL 2709 at Houston
Tulsa → Houston → Atlanta
Timetable, Houston time
11:05UA 2764 from Tulsa at the gate
08:05DL 2709 to Atlanta leaves the gate
21 h apart on the timetable, overnight
DL 2709 leaves 21 h after UA 2764 arrives on the timetable: more than half a day, so not a connection we count.