DL 2990 then DL 836 at Atlanta
Jacksonville → Atlanta → Phoenix
Timetable, Atlanta time
17:25DL 2990 from Jacksonville at the gate
16:25DL 836 to Phoenix leaves the gate
23 h apart on the timetable, overnight
DL 836 leaves 23 h after DL 2990 arrives on the timetable: more than half a day, so not a connection we count.