PayPal Data Science interview questions

I was contacted by recruited and went 2 rounds of interview. First round of skype interview with one data scientist and second round with two data scientists. Each round was around 45 mins.

2 technical interviews with data scientists (including potential manager) and a concluding HR interview. I was also asked to provide 2 recommenders. I was job hunting discretely so asked to provide 2 past employers. After talking with them I was asked to provide my manager as a recommender, thus forcing me to confide my job search. After talking to him they decided to not extend an offer. When I asked for feedback the answer I got was lack of experience, which quite frankly was outrageous given the fact such piece of information was already known to them when they asked me to provide my manager as a recommender.