WN 3723 then WN 3377 at Phoenix
San Diego → Phoenix → Nashville
Timetable, Phoenix time
20:55WN 3723 from San Diego at the gate
17:55WN 3377 to Nashville leaves the gate
21 h apart on the timetable, overnight
WN 3377 leaves 21 h after WN 3723 arrives on the timetable: more than half a day, so not a connection we count.