I live in Italy and I think you were never stopped because it was an internal flight. Again, you are not likely to be stopped at any airport in Europe that is part of the Schengen agreement. For instance, I have never been stopped at airports in Belgium and Holland even though I am a non-European. On the other hand, I have to go through normal aiport procedures on my arrival in the UK and Ireland which are not part of the Schengen.