DL 1209 then DL 1210 at Salt Lake City
Portland (Oregon) → Salt Lake City → San Diego
Timetable, Salt Lake City time
16:22DL 1209 from Portland (Oregon) at the gate
15:24DL 1210 to San Diego leaves the gate
23 h 02 apart on the timetable, overnight
DL 1210 leaves 23 h 02 after DL 1209 arrives on the timetable: more than half a day, so not a connection we count.