The interview was more of them briefing you about what the project they are working on is about and their agenda. The second interview was to tell you about a form that you needed to fill a form regarding some question they had.
Interview questions [1]
Question 1
What is a question that a high schooler can answer? What is a question that a college student can answer? Show your solution. What is a question that a grad student can answer? What is a question that an expert can answer? Show your solution.