F9 4076 then WN 3553 at Atlanta
Houston → Atlanta → Pittsburgh
Timetable, Atlanta time
16:51F9 4076 from Houston at the gate
16:30WN 3553 to Pittsburgh leaves the gate
23 h 39 apart on the timetable, overnight
WN 3553 leaves 23 h 39 after F9 4076 arrives on the timetable: more than half a day, so not a connection we count.