Complex question about a business need that needs to be translated into product based created by an ETL. Mostly SQL and Spark, questions about the excise. The was no home assignment and it took around two and half hours to finish

They got in touch with me, then ignored my emails. then a month later I got another phone call from them... Seems like the recruiting department is chaos. I did a home assignment (they give 4 days for it), and they didn't even bother to give me feedback