Brasília is 2 hours ahead of Montreal
Best overlap: 8:00 AM to 4:00 PM in Montreal is 10:00 AM to 6:00 PM in Brasília.
If you set up a recurring sync, 8:00 AM to 4:00 PM in Montreal (10:00 AM to 6:00 PM in Brasília) is the natural home for it. Despite the 2-hour difference, an 8-hour overlap keeps things simple and gives both teams breathing room. Finally, Montreal observes daylight saving and Brasília doesn't, so this window shifts by an hour for part of the year — recheck it each spring and autumn.