NatWest Group Software Engineer interview questions

The interview comprised both technical and HR rounds. During the technical round, I was asked about my resume, with a focus on my projects and contributions. The HR round emphasized my strengths, weaknesses, and included several situational questions.

-> I sent my resume to the hiring manager for a job role in his team at natwest. -> I cleared first technical round , then second technical round as well as managerial discussion -> Then suddenly after all this I was told to appear for one more tech round F2F . They were insisting that you might have used AI to cheat in virtual rounds. -> I attended the F2F round and then got a reply that feedback is positive next step will be HR collecting documents and salary expectations -> Now for 2 months after this , the HR did not contact even my multiple follow ups. -> Then , a workday role created and i was referred and asked to apply , then got an email from HR for current payslips and other docs . -> Post this HR scheduled a call for salary discussion and we agreed on some number -> Then finally got an email from HR that I am no longer being considered for this role. -> No Explanations on what went wrong