F9 4702 then DL 1478 at Atlanta
Austin → Atlanta → Detroit
Timetable, Atlanta time
19:10F9 4702 from Austin at the gate
18:20DL 1478 to Detroit leaves the gate
23 h 10 apart on the timetable, overnight
DL 1478 leaves 23 h 10 after F9 4702 arrives on the timetable: more than half a day, so not a connection we count.