Hi, my partner and I are landing into GRU Terminal 3 from a Lufthansa flight and need to book a connecting flight to Rio. I know we are going to have to leave the secure area, collect luggage, go through immigration and change terminal. I have both *G and OneWorld Emerald statuses so it comes down to which of those offers the best lounge options when departing from T2 (I.e for Latam or Avianca?). Are we even allowed to walk back and use the Latam or Star Alliance lounges in T3 when departing on a domestic flight from T2?

Thanks for your help!