HD Supply Senior Manager-ERP interview questions

Standard start - 1 phone with HR that verified I was who I claimed to be, then 1 phone with hiring manager to go over specifics and details of position and my experience and skill, which I was told went very well. 1 more phone interview with the off site contract project manager, also that went well. I was told I had the experience, attitude and drive they were looking for. I was scheduled for 5 hours of on site interviews meeting with 8 different people, and while grueling, I feel went well. Last meeting that day was another phone call with the hiring manager (who is off site) and he said 'we've got a couple things to get organized'. I sent thank you emails to the team and cross my fingers. One week goes by... two weeks go by, I email the hiring manager. more time, I email the HR person... I see the job go back on the job board with a slight change in title.... Finally I get an email from someone in the team that interviewed me saying they are breaking the rules calling me but wanted me to know the HM decided 'to go a different direction'. No idea what that means. SO, long drawn out interview, ghosted at the last step. Only found out the answer was no because someone broke the rules to do the right thing.