Very confused with MSFT SE2

I have been interviewing with Microsoft since late March 2024, possibly for an SE2 position. There is no HR involved. Engineers/Managers from Washington and Hyderabad call me or email me and schedule my interviews.

Round 1 (Mar last week): Technical Round 2 (Apr first week): Technical Round 3 (Apr 2nd week): Technical Round 4 (Apr last week): HM

Surpisingly, there is a round 5. Round 5 (May second week): Technical/HM

My 5th interviewer said that there is going to be a 6th round of interview as well, by the manager of 5th interviewer. He also said, "Hoping that we will work together soon."

As of the date of writing this post, my 5th interview was almost 3 weeks ago. I asked my 5th interviewer for an update and I got a response saying:

"Sorry for the delayed response. I was so busy with many work items. At the moment we are on hold and we will reach out to you once we have the confirmation."

After my 3rd round of interview, there was a gap of 2 weeks as well, and upon aksing my 3rd round of interviewer about an update of my candidature, he told me something similar. It did upset me but I did have a 4th round as well.

Given Microsoft is hiring a lot right now, I feel confused why my candidature is on hold. I feel very frustrated and desperate for the offer.

Because I am new to this, I would appreciate if anyone here, can help me with their experience ,what could be going on?

PS: All my interviewes were extreamly well.