TRUMPF Applications Engineer interview questions

I applied for this position online. I was then contacted by recruiter to do a 1 hour phone screen. The hiring manager actually postponed my phone call for two hours (each time saying it would only be another hour), which I found to be a minor inconvenience. Following the phone screen, I was flown to their site in CT for an onsite interview. Interview consisted of the recruiter, manager, and another colleague. I never heard back following that interview. I thought that it was a very unprofessional conclusion.