Eurofins interview questions

This was a bizarre and strikingly unprofessional experience. An external recruiter (who was pretty reasonable and pleasant to work with throughout) reached out to me, without any detail about the actual position, just that Eurofins was looking for a senior software engineer. Fine, I'm interested, I told him. A week or so later, before I had talked to anyone at Eurofins, I got a generic rejection email. I shrugged and moved on. A week later the recruiter called me and told me that the email was a mistake, and they wanted to interview me. He said the interview was scheduled for 8pm IST on whatever day. I asked what IST meant. "India standard time," he said. Well, I'm in the US in central time, so I asked when that would be for me. He wasn't sure so I googled it. 8:30 am. Okay. The interview was very cold and technical. Without any introduction, the interviewer asked me a series of technical questions, many of which were vague and I had to ask what he meant many times over. At the end, he basically asked the last technical question, said "thanks, have a good day" and ended the call. I pinged the recruiter, who hadn't heard from them, and after a week or so, I just moved on. A couple of weeks later, the recruiter called me and said congrats, they want to do a final interview. It took me a moment to remember what company we were talking about, but ok, sure. It was scheduled for 45 minutes with a director and a woman. In the interview, she never introduced herself or said a single word. To be honest, I thought she might be new and sort of shadowing the interview process, but I think she had some sort of position related to the opening, which I only found out later. The other interviewer didn't really seem to want to be there. He asked me a few open-ended, seemingly random behavioral and technical questions, and after about 15 minutes, asked if I had questions. I asked what the job would be and I was unable to get a clear answer, even after pushing over and over. At first he gave vague answers like, "Well, this group does a lot of things..." and eventually I was able to glean that it was a new, small research group which had some kind of machine learning and this role was supposed to be the first full stack engineer who would, ya know, write some software that did things. That's all I knew. Then, about 25 minutes after the interview started, he thanked me for my time and ended the call. I never heard anything back. I asked the recruiter if they could tell meore about the position. Didn't hear back. Eventually I got another offer and told the recruiter that if they were still interested, it was now or never. A few days later he said that they were not moving forward. Okay then.