First interview was an informational/behavioral 30-minute phone screen with a recruiter. Second round was a slightly more technical phone interview with the hiring manager. Next, I flew in for an on-site interview.
The HR interviewer I initially talked to was a fine communicator, but the other HR employee who coordinated my travel / interview schedule came across as highly disorganized. She claimed I could submit my hotel bill for reimbursement, but has ignored voicemails and emails (for over 30 days now) in which I've requested an update on my reimbursement (after declining the job offer... coincidence?). Note that the company also does not reimburse any food expense during travel (I only found this out after the fact, and they are the only company who has set this boundary for me).
Another example of this HR employee is from when she initially called with my verbal offer. She called, told me the total compensation for the role, and before I could even acknowledge the information, she was asking "so would you accept this offer?" ... seemed like a very unusual approach to me. Not to mention the compensation was particularly low for the area compared to other offers I've received for similar positions. It sounds like their salary bands are just lower overall than at other manufacturing companies.
The final interview itself was ok - it was a panel interview with the plant manager, a senior engineer, HR, and the hiring manager. Each took turns asking scripted questions which at times felt repetitive. Questions were primarily behavioral in nature, and several questions involved my comfort level with longer work hours (I do recall that they offer overtime pay for anything over 50 hours/wk). When I asked them a question about their safety culture, an interviewer responded by asking me "are you asking that because it's important to you, or because you think we'll like that question?" ... he then proceeded to somewhat condescendingly quiz me on whether I knew what an OSHA recordable is...