Denim Group interview questions

Was asked to come back for a second interview and given material to learn. One of the founders added me on LinkedIn, but never got a call back. I sent a thank you card with “look forward to hearing back soon” and 2 days later got an email saying experience wasn’t a match. Definitely caught off guard especially since I was offered a second interview during the initial interview because it seemed to go really well I was just waiting for scheduling because they did say the founders of the company always interview candor and I was given direct information to study which I had, but oh well looks like I wasn’t a good fit. Good luck the company definitely seems like a great place to be apart of.