X Software Engineer interview questions

Went through 2 phone interviews and an onsite loop, with a total of 7 interviews. All the interviews went fairly well. The recruiter called me after the onsite saying that she got feedback from everyone except one person and the feedback were all positive. For about a month after that, the only update from the recruiter was that they were just waiting for the missing feedback. After a month, the recruiter eventually told me that they had closed down the position! What a waste of my time.