Kobiton interview questions

There was a total of 4 interviews. The first interview was very laid back and became progressively more detail oriented. I made it to the final round with the CTO. He was very bait and switch. Initially portrayed one personality so that I would feel comfortable, then his demeanor went very abrupt. I felt as though he talked to me like a dumb little girl above my head. Instead of saying scalable, he felt a need to explain the definition. Instead of saying informative vs. instructional video, he felt he had to show me. We ended with him needing/requesting something that was never apart of the job posting nor any of my previous interviews. My company does not train partners how to use a tool with an informative video. He did let me know that I was missing something that he needed, but wouldn't tell me what. I really appreciated the learning experience, and it gave me something else to brush up on. I'm not upset I didn't get the offer. If i was confused about what he was looking for in the interview, can you imagine day to day life.