The process seems disorganized. They rescheduled my on-site because they first told me a day without having all employees in the office (nearly was at my own expense, if I hadn't booked a refundable option).
In the on-site, I spoke to 5 people over the course of 2.5 hours. They went through standard data structure questions and a short whiteboard session. They asked me questions about a framework that isn't even listed on my resume. There was also a round delving into my work history and architecture experience.
In the time since then, ZoomInfo has not returned my follow-up inquiries, despite them assuring me that I would get an answer within the week. I'm upset that I wasted my time and money traveling to the Boston area, and they can't even say "no thanks".