Autodesk Business Intelligence Engineer interview questions

Spent more than 5 hours interview time with Recruiter, Hiring Manager, Technical phone interview followed up by 3 onsite interviews on a single day with different people including Hiring Manager. The hiring team and recruiter at the end did not care to even communicate/respond to me about their decision to hire someone else. A courtesy email from the HR was the least rather than an automated email informing their decision to hire someone else. A negative review just for their whole process and unprofessionalism