F9 4702 then DL 1861 at Atlanta
Austin → Atlanta → San Juan
Timetable, Atlanta time
19:10F9 4702 from Austin at the gate
18:45DL 1861 to San Juan leaves the gate
23 h 35 apart on the timetable, overnight
DL 1861 leaves 23 h 35 after F9 4702 arrives on the timetable: more than half a day, so not a connection we count.