Quantum Networks interview questions

Disorganization at its finest. I had a phone screening with HR and was then given a project to complete within the next couple of days. I put a lot of work into the project and was told that I was to present it at the in-person interview. I even prepared a slide deck just in case. The in-person interview with HR was fine, although they left the room a couple of times which was nerve wracking. Then they called in the president of the company to hear my presentation. Either he didn't know about the presentation or didn't care, but he just made small talk about my resume, asked if I had any questions and sent me on my way. He was incredibly hard to talk to. I feel like I dodged a bullet on this one.

Applied online, received an email to schedule the interview. Arrived the office, everyone is doing their own things, no one was acknowledging my presence and no one was helping me. Finally someone passed by and helped me. But I was still left hanging for another 15 mins until someone finally came get me to the interview room. She asked some questions and ask me if I have any questions. I was in and out about in and out in 10 mins, and then she said they usually do 2 round of interview, and ask me to send an follow up email with her, I was lost and confused as I thought the HR is the one who does the follow up?