Wonder Research interview questions

I filled out the short quiz. Passed it and got an email for the next application. The 1st part was fine, but the second part was a little misleading and pretty tough. I had a question about the assessment, looked for some way to contact someone who could answer, but had no luck in doing so..

After passing a short quiz, I was invited to complete a sample project. This took quite some time. After moving to the next level, I was asked to complete a lengthier project. I spent about 4 hours in the application process, and now have not heard back.