Had a fairly thorough phone screen, then met with the hiring manager. Seemed to go well until the HM threw in a request for me to describe how their platform worked. Coming from outside the industry, I know what they do in a general sense, but there's no way I'd know how the platform worked. There was no mention in the role description that they were looking for someone with in-depth product knowledge. Also, researching the company is a regular part of a job search, but I'm not going to take a course or otherwise learn the product without being paid for it.