Submitted online application to a third party website, and a few days later, received 1st round phone interview. It was a very short, 15-20 min, chat about fit questions and relevant experience. Fortunately, was referred to the HR and arranged a "super-day" interview. It was probably the most intensive interview process I had ever been through. 90 mins case prep and 15 min *2 presentations to senior directors, followed by 30 min 1-on-1 pure behavior interview with one Sr. director, and lastly a 30+30 min group case interview. It was a whole day event in their Connecticut research site.