AA 9919 then F9 1820 at Phoenix
South Bend → Phoenix → Denver
Timetable, Phoenix time
09:30AA 9919 from South Bend at the gate
21:59F9 1820 to Denver leaves the gate
12 h 29 apart on the timetable
F9 1820 leaves 12 h 29 after AA 9919 arrives on the timetable: more than half a day, so not a connection we count.