F9 1439 then Y4 1885 at Phoenix
Salt Lake City → Phoenix → Guadalajara
Timetable, Phoenix time
00:18F9 1439 from Salt Lake City at the gate
20:16Y4 1885 to Guadalajara leaves the gate
19 h 58 apart on the timetable
Y4 1885 leaves 19 h 58 after F9 1439 arrives on the timetable: more than half a day, so not a connection we count.