WN 2709 then WN 554 at Denver
Memphis → Denver → Phoenix Sky Harbor
Timetable, Denver time
20:05WN 2709 from Memphis at the gate
19:40WN 554 to Phoenix Sky Harbor leaves the gate
23 h 35 apart on the timetable, overnight
WN 554 leaves 23 h 35 after WN 2709 arrives on the timetable: more than half a day, so not a connection we count.