1) HR screening: Went well
2) 1hr technical questions with hiring manager: Went well.
3) Take home data science case study: Yet another company with this lazy recruiting practice expecting you to spend crazy hours developing the perfect model.
In my opinion this home assignments are not the way to go, split tasks in things you want to evaluate, giving a giant assignment and expect to evaluate every single competency from it is disrespectful for a candidates time.
Also, if for some reason you really want to do a home assignment, do the candidate a favour and spend a minimum of one hour giving thorough feedback to the candidates. All I got was: Nothing. They didn't even bother to send a feedback email, super disrespectful.