DL 1223 then DL 366 at Atlanta
Cincinnati → Atlanta → Phoenix
Timetable, Atlanta time
16:33DL 1223 from Cincinnati at the gate
13:20DL 366 to Phoenix leaves the gate
20 h 47 apart on the timetable, overnight
DL 366 leaves 20 h 47 after DL 1223 arrives on the timetable: more than half a day, so not a connection we count.