DL 3897 then DL 9964 at Seattle
San Jose (California) → Seattle → Salt Lake City
Timetable, Seattle time
20:22DL 3897 from San Jose (California) at the gate
12:00DL 9964 to Salt Lake City leaves the gate
15 h 38 apart on the timetable, overnight
DL 9964 leaves 15 h 38 after DL 3897 arrives on the timetable: more than half a day, so not a connection we count.