According to Brazilian press, QR service to GIG and SCL will start on 30th of January 2018.

The flight will be operated on Tuesdays, Thursdays, Fridays and Sundays with A359. The service is scheduled to land at GIG at 5pm and is slated to takeoff back to Doha at 05h45am the following day.

And seems the route is DOH-GIG-SCL.