600* people got to stage 2, They never emailed anyone who was Unsuccessful! They won't as far as I know they only tell people who've made the cut.
As for the PPL no harm having it shows genuine interest in flying but if you think having a PPL is an advantage you are truly mistaken! They're looking for the right person to fit the job like Personality/Skills/leadership/life experience and the person who's genuinely wanting to be a future captain for the airline will progress
been plenty of guys taken on ahead of PPL holders they've only had few hours flying some none what so ever.