SiPhox interview questions

The position was initially available months ago when I interviewed the hiring manager. I was told that they were going withbother candidates. Out of the blue, a few months later I was called to interview with cofounder and then was asked to come in for an in-person interview with presentation about my career and couple of technical projects I have done. During the interview I was being asked a lot of questions about my previous employer as they were doing alot of similar things. I was skeptical at the beginning of the interview as they took a copy of my presentation. I held my ground and answered vaguely to respect intellectual property and tradesecrets. I had a feeling they were trying to get “free consultants”. The interview process was a waste of time, and poorly organized, and they were totally unfit for the situation. After investing 6+ hours of interview...I felt cheated.