The interview process as a whole was very amateuristic, and honestly, just weird. It started with a couple of calls, then 2 interviews onsite.
During the whole time, the communication was via calls and emails with changing HR people. They left me a couple of voice mails, but didn't pick up when I called or answer my emails. The process just stopped without any communication after I gave up trying to reach them.
Never seen, heard or dealt with this type of recruitment method, but this is definitely not what you expect from a leading, 15K employees, tech company at 2017. Very disappointing