F9 2409 then DL 2891 at Atlanta
Cleveland → Atlanta → Ontario
Timetable, Atlanta time
17:20F9 2409 from Cleveland at the gate
16:55DL 2891 to Ontario leaves the gate
23 h 35 apart on the timetable, overnight
DL 2891 leaves 23 h 35 after F9 2409 arrives on the timetable: more than half a day, so not a connection we count.