F9 2171 then DL 2891 at Atlanta
Fort Lauderdale → Atlanta → Ontario
Timetable, Atlanta time
17:51F9 2171 from Fort Lauderdale at the gate
16:55DL 2891 to Ontario leaves the gate
23 h 04 apart on the timetable, overnight
DL 2891 leaves 23 h 04 after F9 2171 arrives on the timetable: more than half a day, so not a connection we count.