HR person contacted me initially via LinkedIn. Simple message.
Followed up with them a week after the panel f2f interview. They indicated that they did not reach a decision and they would get back to me shortly. 3 more weeks have passed and never heard from them again. Given the length if time the position has been opened (I was contacted by a recruiter back in Nov of 2016 and declined) and other questions they asked, it gives the impression that they were seeking to obtain free expert advise on how to successfully obtain Waterfall metrics in an agile environment...