SAP Senior Software Developer interview questions

Got first call for one team and interviewed with them they had an assignment did that then a 2.5 hours technical. Got call from HR that they dont want me in this team I need to interview for another team so I did the same process again 45 minutes initial call with team manager and then a 2.5 hours technical. I passed the interview and the offer did not even matched my existing salary. The excuse was that I did not mention it to them but I did. They are just wasting time I believe.

technical round discussion about dsa and reasoning. project details discussion. every question involving why about the concept. why java 8 features are important. is debugging easy in java 8 or what is the importance of java 8 which is the most important feature of java 8