The interview itself was a short phone interview and went well, but they sent me a long assessment in the form of an Excel file, and gave me a few days to work through the 17 problems on it. When I didn't understand a question, I emailed them, but they didn't reply. I still completed the workbook on time, and sent it in. They said they'll let me know the "next steps", but I never heard from them again. I think they just wanted to waste my time.