Walmart Sr. Software Engineer interview questions

I was called by HR and an interview was scheduled after two days on a weekday. There were 5 rounds done on the same day over a span of 7 hours. First three were technical rounds, and questions asked were a mix of Object Oriented Design, Problem Solving and Java internals. The last two rounds were taken by a Manager and the Director and questions asked were mostly behavioral questions. HR said he will give feedback in couple of days., but there was none. Although i could not answer couple of questions, overall the interview had gone well. When i followed up with HR after two days, he said they are going to have a internal meeting the next day and post that , he will be able to give some feedback. But even two weeks after that, there was no feedback. No complains about the process as such but they dont seem to have a system of feedback which is quite rare and not good.