It is a four steps interview, you have to pass each step to receive a job offer. The first part is the CV selection, the second part is a HR interview + a technical interview. Then there is a half day interview with 4 different people and finally the medical assessment.

The first step of the interview is the STAR interview method, which basically cuts off most of the introverted people who find it difficult to answer questions in a "fight or flight mode" (55 questions in 45 minutes). This is an American style that assumes everyone is extroverted and chatty. The fact itself that you are encouraged to "study" for the interview process, makes it look like a fabricated interview where you say what they want to hear. I have worked with brilliant people that did not pass this interview style, so it's definitely Lilly's loss. Also, they don't give feedback (after asking you for at least 2 hours of your time to go through the first step of the interview, the minimum I expect is feedback) and if you are not particularly brilliant but have a PhD, you surely are going ahead something better than you with "only" a BsC.