PassiveLogic Software Engineer interview questions

I had two interviews, one with HR and a technical interview with a manager. Both were fine and went pretty well, we mostly talked about my research experience. However, after this they told me that due to an industry trade show their process will be delayed. I understood, and followed up a month later. I've been ghosted ever since, and it has been around 2 months since last contact. Ghosting people is never cool, no matter how busy anyone is.