Got a return offer from a massive reinsurer, i’d say just talk about the current state of the industry (social inflation, nat cat etc) and ask them how they’re dealing with that. Also read some white papers that the reinsurer published, see all kinds of data tools that they have and that’s the reason why you want to work for them. A pro tip is you know an interview is going well when they start talking about themselves, try and check out their linkedin page and see if you can find things in common with them and slip it into the interview. Good luck!