I like to bring this to attention, but travel time between Bariloche and Buenos Aires is measured between 19-25 hours depending on the bus company. Season 5, teams took a bus from Bariloche to Buenos Aires, to fly out of the country. I think on the 2nd-3rd of this month, they travel overnight to Bariloche and then they have an overnight rest and continued the 3rd leg on December 4th. This could be the missing time length between the 4th and 6th of December since if teams took a bus on the morning of the 5th and arrive in Buenos Aires on the 6th and fly out to Paraguay later that same day. Its also possible for them to fly from Bariloche to Buenos Aires, but that means they fly into Jorge Newberry Airport, and take a taxi or shuttle bus across to the outskirts south of the city to Ministro Pistirini Airport. Also travel between Puerto Montt and Bariloche is also possible by road, the time could take around 5-8 hours since its only on the eastside of the Andes, if you include customs at the nearest border crossing.