As others have stated here, it was a three round process:
Behavioral- asked only three questions. Think “Tell me about a time where you did” etc type questions. Others have posted these up in Glassdoor previously so it shouldn’t be too bad.
Case study- mine was a repeat of another commonly asked question on Glassdoor. It was not business at all in any nature, but I followed the steps shown in the video they send you, where I clearly kept talking out loud and lead most of the conversation, which was honestly more like a discussion. It was very simple, and involved refactoring some old code.
Technical- leetcode tagged questions are a VERY, VERY good representation of what to expect. Won’t say anything further than that.
Overall, absolutely amazing experience interviewing with this company. I heard back within three days of my interview that I had received an offer, and immediately accepted. Capital One is a great place to work for, and I could immediately get that vibe from the interviews that I had. I truly think it’s a great place to work, and the perks/salary will help solidify your decision. Best of luck to anyone interviewing for this company!