AA 4996 then AA 2121 at Phoenix
Grand Junction → Phoenix → Reno
Timetable, Phoenix time
12:54AA 4996 from Grand Junction at the gate
08:16AA 2121 to Reno leaves the gate
19 h 22 apart on the timetable, overnight
AA 2121 leaves 19 h 22 after AA 4996 arrives on the timetable: more than half a day, so not a connection we count.