DL 661 then DL 9964 at Seattle
Santa Ana → Seattle → Salt Lake City
Timetable, Seattle time
17:00DL 661 from Santa Ana at the gate
12:00DL 9964 to Salt Lake City leaves the gate
19 h apart on the timetable, overnight
DL 9964 leaves 19 h after DL 661 arrives on the timetable: more than half a day, so not a connection we count.