In Naples I am not sure, but in another big base in Italy you can expect almost zero layovers, in normal circumstances.
As for the contacts... unfortunately the official channel is through the recruitment website. I doubt you would be able to find a direct number without being already into the company, sorry.
Recruitment in Naples was happening some months ago, now not anymore. It was open for both rated and not rated, but as far as I know, most of the positions went to rated applicants.