ET 3608 then UA 312 at O'Hare
Anchorage → Chicago → Austin
Timetable, Chicago time
07:16ET 3608 from Anchorage at the gate
19:55UA 312 to Austin leaves the gate
12 h 39 apart on the timetable
UA 312 leaves 12 h 39 after ET 3608 arrives on the timetable: more than half a day, so not a connection we count.