KJ 248 then AA 2279 at O'Hare
Anchorage → Chicago → San Juan
Timetable, Chicago time
08:40KJ 248 from Anchorage at the gate
08:05AA 2279 to San Juan leaves the gate
23 h 25 apart on the timetable, overnight
AA 2279 leaves 23 h 25 after KJ 248 arrives on the timetable: more than half a day, so not a connection we count.