OpenText Principal Software Developer interview questions

What is the most challenging part you've done as a full-stack software developer?

The first technical round focused entirely on system design, along with one problem related to HashMap.The second technical round was centered around Spring and core Java concepts.The third round involved a few coding practice questions and one problem to solve.The Director-level round was completely behavioral. In director round asked about my expected salary.The VP-level round was a mix of technical and behavioral questions.All the rounds went well. The HR round was a bit unusual. The HR seemed partially sleepy during the conversation—she yawned in between questions, then suddenly woke up and asked for clarity on my answers. She asked about AI-related I realised she doen't have any understanding about AI. The online question was one medium and other above medium level.All completed after a week I called recruiter , The way he speaks almost confirm the offer and a week later recruiter updated they stop proceeding this process and he ask me how the HR interview went??