Yes, they were all waiting for an interview in Rio. There are few people in this group who are applying abroad, like at the Paris Consulate (Brazilians that live in Portugal or France) for example. Apparently, for most of the Consulates, the NVC manages to schedule the interviews according to the DQ, no matter where is going to be your interview. There are few exceptions like Canada, that due to its proximity to the USA, has a high demand for US visa applications, and probably because of that, has a huge waiting list there. But for most of the Consulates, NVC schedules all DQs from June23 quite at the same time, for example. It might have a little variance of 1 month between the Consulates, but the line is pretty the same almost everywhere unfortunately.