AR 1920 then AD 4280 at Guarulhos
Buenos Aires (AEP) → São Paulo → Porto Alegre
Timetable, São Paulo time
11:45AR 1920 from Buenos Aires (AEP) at the gate
21:05AD 4280 to Porto Alegre leaves the gate
9 h 20 apart on the timetable
Guarulhos’s board gives an arrival time for only about 40% of its flights, so many days show no gate time.
Guarulhos’s board shows about 53% of departures at their timetable time, so delays of a few minutes don’t show here.
The last days
AR 1920 and AD 4280 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.