Control Risks interview questions

Had a first round interview with a member of the talent team overseeing Control Risks One. It went fairly well and I was told at the end of the interview that a follow up interview would be arranged for the next week and that I would receive an email to set it up. I never received any follow up, and having emailed twice to check in to see if it was still an option, still didn't receive any reply. The interviewer seemed like a really nice person and the opportunity was very exciting, but I was naturally quite disappointed by the lack of communication. Mindful that needs likely changed etc and people are incredibly busy so I haven't taken it personally, but still would have been nice for this to be clarified so that I wasn't waiting. My friend also had a similar experience where she went for a final round interview at CR, delivered a presentation in-person, and never heard from them again.