GG 9720 then UA 3 at O'Hare
Anchorage → Chicago → Zurich
Timetable, Chicago time
16:11GG 9720 from Anchorage at the gate
16:10UA 3 to Zurich leaves the gate
23 h 59 apart on the timetable, overnight
UA 3 leaves 23 h 59 after GG 9720 arrives on the timetable: more than half a day, so not a connection we count.