American Express Project Manager interview questions

First a take home assignment and then an interview. For take home assignment they gave an excel with lounge visits, card details, how many add-on cards, how many guest visits, etc. and they asked me to make a presentation out of it and look for insights and opportunities to work upon especially to cut costs or enhance the product offerings. They liked the analysis and presentation I made but I got rejected in the interview round as they felt I didn’t display product manager skills and I was only good at analysis