Brasília is 1 hour ahead of Caracas
Best overlap: 8:00 AM to 5:00 PM in Caracas is 9:00 AM to 6:00 PM in Brasília.
For the smoothest call, aim inside 8:00 AM to 5:00 PM in Caracas, i.e. 9:00 AM to 6:00 PM in Brasília. The overlap is wide at 9 hours, so you can protect mornings for deep work and still find plenty of meeting time.