Thorough and specific. Equipped yourself with multiple infos, details etc etc. During my time only single interview instead of multiple sessions. Got the offer the following week and negotiation were done within same week. 3 hiring PIC were there for the interview process.

The interview session was quite tense, the moment they acknowledged you had hiccups in your answer. They would highlight it till the end. Forgetting other good details of your achievement, but focusing on your hiccups