hey castanha02,
after the first phase of testing you may be invited for phase 2 and after that if you pass again the interview.
The medical examination is always around 3 months before your trainingsgroup will start the atc training, so this may take a long time. some people have to wait e.g. 1 year 3months, others just 3 months... so it depends on how full the next group already is and when the next training starts...
greetings