Channel 26 had a crew down at Plaza San Martin today around late in the 2nd half and then interviewing Brazilian fans after the game. (That doesn't help, I know, but I'm just sayin'.)
PS- I have no idea where there is a Brazilian bar near Callao & Cordoba and I know that neighborhood fairly well. Maybe at the corner of Ayacucho & Cordoba (NW corner), but I'm not even sure about that.