Shape Security Director interview questions

Lengthy, unprofessional and waste of time! Knowing well in advance that I don't have CDN experience or background, asked me only questions about CDN (maybe insecure employees) completely ignoring my skill-set and strengths. Worse of all, they spent $3-4k on flying me to the US to tell me I don't have CDN knowledge which I never claimed in previous 4x interviews with them, one of them with VP. The feedback was absolutely useless stating the obvious and so was an experience which presents them as narrow-minded professionals with lack of decision making. The final round was set of 5-6 separate interviews after being interviewed 4 times earlier. Shape asked me loads of questions of how I run the program as they were building one so I hope they got the return on their expenses while wasting my months in-process and days of flight time.