Upchain interview questions

First, HR interview - was quite nice and engaging; the recruiter cared to elaborate more about the company and the position before asking about the related experience. Later, an interview with the hiring manager; and then you get an access to their platform and you're required to understand it and provide a presentation that consists of both the understanding of the platform, as well as your thoughts related to the job. Though the experience was generally positive, yet I see the last part unrealistic - you shouldn't be expected to study a platform for job application; and the other unusual thing is the request to record the presentation.