WN 1529 then WN 554 at Denver
Pittsburgh → Denver → Phoenix Sky Harbor
Timetable, Denver time
20:00WN 1529 from Pittsburgh at the gate
19:40WN 554 to Phoenix Sky Harbor leaves the gate
23 h 40 apart on the timetable, overnight
WN 554 leaves 23 h 40 after WN 1529 arrives on the timetable: more than half a day, so not a connection we count.