F9 2173 then DL 903 at Atlanta
Fort Lauderdale → Atlanta → Seattle
Timetable, Atlanta time
09:09F9 2173 from Fort Lauderdale at the gate
21:15DL 903 to Seattle leaves the gate
12 h 06 apart on the timetable
DL 903 leaves 12 h 06 after F9 2173 arrives on the timetable: more than half a day, so not a connection we count.