I am Brazilian and I had my interview on Tuesday. My interviewer was from LATAM, but not Brazilian. It went on for almost 2 hours and it was definitely a conversation, as opposed to a structured interview but I also got the describe a leadership scenario, describe a time when you turned a negative into a positive, and similar questions. My interviewer was the nicest guy and always seemed impressed with my answers.
Similarly to what the alum said to uirabr, my interviewer asked me to PLEASE keep him updated on news and tell him what I decided. We also discussed that we will connect again once the process was over I can introduce him to some people since he is new to living in Brazil.
Latams are notably A LOT more open/friendly than American interviewers. I can say that my interview with an American 2nd year (at Wharton) was totally different then my 4 other interviews with Brazilians/Latam interviewrs.
It's definitely a lot easier to connect with someone with a more similar culture.
Good luck everyone! And be prepared for a normal and nice discussion with some typical behavorial questions in the mix.
Uirabr - was your Alum Brazilian? Wondering if we got the same!