Digital Asset Holdings Software Engineer interview questions

I had a first call with a recruiter. The recruiter was very friendly and was talking a lot (which is fine). This was the usual first interview about the position, the company and the candidate's background. I was asked to introduce myself and to talk about why I was interested in the role. I had the feeling that it went well, but then I was ghosted despite following up by email.

2 face-to-face interviews. One with the product manager / EM, talking about the position, the company culture, and the candidate's background. It was a friendly and easy chat. One with a team of (lead) software developers. There were two sessions: the first was about coding tests - to check whether the candidate was familiar with Functional Programming and some specific language features (Haskell/Scala). The second was a system architecture test - to go through a list of questions related to building a distributed system, focusing on consistency, fault-tolerance, and best practices (can think of it as CAP in action)