Quote from Broadreach :
ATC Watcher, how long do you reckon, off the top of your hat and, that it might take to reorganise/integrate ATC in Brazil? Assuming that financial and administrative control were to pass from 100% airforce to a civilian organisation (but probably govt owned as are the airports). When and if you reply, consider whether it might not be worthwhile starting a separate thread.
Out of my hat as you say, I woud guess 3 to 5 years if done properly.
Of course if one wants to change the names and the uniforms and keep the same people/structures/procedures it can be done faster : For instance the DFS in Germany integrated their military controllers into the civil structure in roughly one year , but the civil strucure already existed and the prime body was civil and only about 15% military were to be integrated.
But I do not think that is the aim.
In Brazil the whole en-route ATC is military and I understand that no civil entity (e.g Airports ) has en-route ATC experience, which is quite a different business.
What is happening in Argentina , who has pledge to do the same would be interesting to watch.