São Paulo is 5 hours behind Rome
Best overlap: 1:00 PM to 6:00 PM in Rome is 8:00 AM to 1:00 PM in São Paulo.
Both teams are at their desks between 1:00 PM to 6:00 PM in Rome and 8:00 AM to 1:00 PM in São Paulo. The shared window is roughly 5 hours; treat its midpoint as the default and you'll keep both teams happy. The difference isn't constant year-round: Rome adjusts for daylight saving while São Paulo holds steady.