K4 537 then DL 1818 at O'Hare
Anchorage → Chicago → Seattle (SEA)
Timetable, Chicago time
23:39K4 537 from Anchorage at the gate
17:30DL 1818 to Seattle (SEA) leaves the gate
17 h 51 apart on the timetable, overnight
DL 1818 leaves 17 h 51 after K4 537 arrives on the timetable: more than half a day, so not a connection we count.