Expedia Group interview questions

The process was fast. They were helpful with all the travel expense. I had two interviews : one is a small interview with a hiring manager. After this one I was sent some data and told to make a recommendation system. Then there was a presentaion and three more interviews. I realized half way through the presentation that there was a flaw in the model and became very nervous after that and messed up everything. I missed questions which were very easy. The hiring team was decent and helpful and intelligent. However, even though I did not perform well at the final round, I had taken the time to the entire test and come all the way for the interview. What bugged me os that they have the courtesy to even send a rejection mail or change you status online. Almost 2 months now.