Amazon Operations Manager interview questions

I was shocked at how rapidly everything was moving after applying online after seeing a post via LinkedIn. From time of application I got a call back to schedule a phone screen for two days later. Phone screen went very well with questions centering around their leadership principles and a math flow to schedule manpower based on output needs. After the phone screen I was being asked to confirm I could attend a regional hiring event less than 30 minutes away at a site. I got this call 4 days later and the interview was only 3 weeks later. The day of the interview was a tour, then a round robin 4 round of interviews with facility leader (general manager), HR, outside manager and the SR ops manager. I felt it went really well and the questions were very fair behavior and leadership based questions with ample time to ask 3-5 questions at the end per interviewer. The only odd item was the day was from 1030-1630 and no food or opportunity to eat was provided. One of the interview rooms had a stack of 15 pizza boxes, but they were for something else? Additionally, the day was going great and I was waiting with a few other candidates thinking we had more to go at the end. One employee that had helped us early in the day suddenly said "I can walk you out" and apparently the day was done. We asked about next steps and nonchalantly they just basically said recruiting should get back to us in a few days and that was that. Leading up to that I felt there was no doubt I would have a place at Amazon, but then I was doubting if I was correct as were the other 4 candidates that were interviewing that day. About a week later a recruiter reached out via email on what was clearly a copy paste template that almost read like a college application rejection letter, but then at the end said "don't worry it's good news" and wanted to schedule a time to talk. When we spoke they stated the wrong position, then clarified the correct position and they would be presenting an offer. I was asked for location preference as well as target start date. When I said as soon as possible with at least 2 weeks after acceptance of offer to ensure I gave notice they almost seemed surprised like that was too soon. They stated they would have meetings the rest of the day and would get back to me in two weeks. I asked if this was their line to call, they stated yes and to also feel free to email with any questions. Well it's been over a month and they are now "ghosting" me. I sent a check in email shortly after the two week mark with no response, as well as one recently that has also not received a response. What is also odd is the number the recruiter provided goes to Amazon HQ and the receptionist is someone different and rude every time and refuses to transfer the 3 times I have called over a month period. I reached back out to a recruiter that was very helpful earlier in the process, and they indicated this was an abnormally busy time and they reassured me the recruiter I was now assigned to since moving from interview to move to offer stage was working to start me "ASAP". When I asked to confirm I had the correct email, they indicated I did along with saying "but feel free to contact me with questions". I asked a few questions and they have now also stopped responding. I was incredibly excited that I had a chance and potentially a spot with Amazon as the company is only going to grow and be successful long term, but now I am just confused and bummed. It is fully possible an offer is still coming, but I am completely in the dark and things continue to go downhill in my current job and company. While this may seem like common sense to some, to others it may not be: ensure you are still 100% at your current place of employment and do not make any changes regardless what you are told verbally by Amazon representatives. Until you have a formally accepted IN WRITING offer with a start date, do not bank on things working out. Unfortunately even then it's not 100%. Thankfully I didn't fully disengage or start telling anyone I was leaving as I took the advice of family and friends, but this could have been a very bad deal if I went off verbal exchanges alone.