The real match in which the kidnappers release the Ambassador on its crowd was between the clubs ''America'' vs ''Fluminense'', not ''Flamengo'' vs ''Vasco'' as the film shows.
(at around 1h 16 mins) Shortly before 8:30 PM on the final day, late in the countdown to 10:00 PM, Maria's watch clearly shows the hands at approximately 9:32.
When Fernando is taken from his apartment, he's given blacked-out sunglasses. On the next scene, actor Pedro Cardoso instinctively looks to check if a car is coming before crossing the street.