WN 261 then DL 2891 at Atlanta
Tampa → Atlanta → Ontario
Timetable, Atlanta time
19:40WN 261 from Tampa at the gate
16:55DL 2891 to Ontario leaves the gate
21 h 15 apart on the timetable, overnight
DL 2891 leaves 21 h 15 after WN 261 arrives on the timetable: more than half a day, so not a connection we count.