F9 1323 then UA 1302 at Denver
Dallas-Fort Worth → Denver → San Diego
Timetable, Denver time
14:04F9 1323 from Dallas-Fort Worth at the gate
13:25UA 1302 to San Diego leaves the gate
23 h 21 apart on the timetable, overnight
UA 1302 leaves 23 h 21 after F9 1323 arrives on the timetable: more than half a day, so not a connection we count.