INSEAD interview questions

I applied online, and was contacted initially by the human resources agent who asked the initial selection, then I had a meeting with the hiring manager who asked me more details related to the job I was applying too, it was a nice discussion.

3 rounds of interview. On the third interview asked me to bring laptop with no reason why. Told me it was administrative and it was a 6 months contract support role. After speaking to the big boss he was very kind. Then suddenly asked me to create a powerpoint presentation of myself. When the job never described that the role meant you would be making pitch decks. Spent 30 mins on 4 slides. Then brought to a room with 6 other people. And all of them started to provide feedback on my presentation. Down to font type and colours chosen. It felt really weird for a contract support role. They didnt hire me but a few months later after I got a managerial role with almost 2x pay they asked if I was still interested in the role. Felt like a really strange experience.