2I 594 then DL 871 at Salt Lake City
Denver → Salt Lake City → Seattle (SEA)
Timetable, Salt Lake City time
05:242I 594 from Denver at the gate
17:25DL 871 to Seattle (SEA) leaves the gate
12 h 01 apart on the timetable
DL 871 leaves 12 h 01 after 2I 594 arrives on the timetable: more than half a day, so not a connection we count.