DL 2995 then DL 438 at Seattle
Salt Lake City → Seattle → Boston
Timetable, Seattle time
12:40DL 2995 from Salt Lake City at the gate
11:45DL 438 to Boston leaves the gate
23 h 05 apart on the timetable, overnight
DL 438 leaves 23 h 05 after DL 2995 arrives on the timetable: more than half a day, so not a connection we count.