Boston Consulting Group (Senior) Data Scientist interview questions

Good process in general, first HR, then with a partner and then with a technical manager. Last two were focused in biz and data science The only thing I found bad was that they didn't call back from last interview, no feedback, no news about the position, so I just assumed I didn't pass

Went through 7 rounds of interviews with this company. They flew me out to Boston for the 7th interview. Told me that I needed an 8th to follow up again and then told me that I wasn’t qualified for the position...seems they should have known that going into the 1st interview. Especially since they chose to interview me for a position that I hadn’t even applied to. They also kept moving the goalpost on number of travel days a week and walking back promises throughout the interview process.