Capital One Software Developer interview questions

It's a long 4 hours "power" interview as they call it. It has architectural part, coding part, some kind of "business question" part (where a software engineer could be asked mostly irrelevant mind boggling questions about calculating profit, making marketing suggestion etc) and behavioral part. I felt like I fell short on first 3 parts. I am not good at quickly-code-me-solution-while-i-watch type thing or "find the bug in 20 20-liners given 1 minute for each". Architectural interviews are always open ended meaning they are not about coming up with a good architectural solution but rather meeting your interviewer's version of truth. So you have to use your divination and interrogation skills to figure it from your interviewer. Needless to say I was exhausted from the tension and incessant 4 hour speaking. They throw you a 30 minutes bathroom break as a bonus, but it's not felt much like a break. This was my second attempt with CapitalOne and I don't think there will be the third one.