ING Chapter Lead Data Analytics interview questions

Interview process was vague and open ended. I did recieve some feedback however it was larlgely de-coupled from what the assignment was asking and the implementation provided. Even though assignment was open ended and mentioned openess to trying out new ideas, based on feedback it seems they had a particular implementation they were looking for and anyhting else would be subpar. For example a specificity on nr of lines on methods that use complex 3rd party libraries vs method cyclomatic complexity which is a more important measure. Based on statments like "do not limit yourself to what we can come up with" scattered in the file they provided, this clealry creates a decoupling from expectations vs how it will be assessed. It seems that what they were actually looking for was a fully productionalisable bug-free solution (24+ work hrs) to an interview assessment which is an unrealistic expectation. Did I also mention the cancelling of the code review session (which gives candidates chance to explain thought process, approach etc.) 5 minutes before scheduled start time which shows a lack of professionalism and disregard for candidates. I guess one of the code reviewer's LinkedIn profile which shows "soft skill:restless" was the main deciding factor. There's nothing wrong with setting a clear, precise expectations in assessments for candidates as long as they are made clear if that's what the company is looking for. It is my opinion that if an assignment is left open-ended then it should be treated like that.