This position is still not filled, yet it continues to be repeatedly posted, for nearly 2 years now. Seriously?

You are not alone in your Danaher experience. I too was shocked that a company known for process improvement conducted interviews in such a haphazard manner. Between August 1st and August 30th I had 8 interviews for a mid-level analyst position. I got zero feedback after the interviews, just a request for another interview. After my final interview on 8/30 I was told that would make a decision by the end of the week. That didn't happen, nor did it happen the follow week or the week after that. Yesterday I learned that they had went with an internal candidate. To say I was disappointed would Danaher would be an understatement. On the upside, I have a feeling we both dodged a bullet!