Nihon Kohden interview questions

The interview process had 2 interviews. First was the phone interview, next was an in-person interview. The in-person interview consisted of putting together a work instruction for assembling a model car. I thought it was a great interview activity to demonstrate if you know GMP and how to write manufacturing instructions. Everything about both interviews were fair. Why I say I the experience was not good was because they didn't get back to me for 3 weeks after the 2nd interview. Initially it was communicated 1 week to know their verdict. I followed up with them multiple times and their responses were unclear if it was going to take the next week, or 2 weeks. I was interviewing with multiple companies and wanted to really give this company a shot. But the waiting did not make the process easier. 3 weeks later, I received an email stating that they wanted to pull together another surprise interview where I would have met more people and I'd do the same thing I did in the 2nd interview. With poor communication and the unplanned 3rd interview, I could already feel they were not aligned with what they were looking for. I'm not saying that the interview experience was bad because it was not. But I am saying that you either know what you want in your candidate ahead of time and you communicate directly, or you don't know and leave them without direction.