I was contacted and flown out. Interview day was 6 hours and I was interviewed by 5 different folks.
All of the questions were technical and specific in nature - it was a very "typical" hardware interview - know pipeline stages, know how to make HSM diagrams, know how to simplify logic, know some facts about sizing and logical effort and fanout and speed and what makes a circuit fast or slow. Know setup and hold. Overall it was a very complete interview, but most questions were not of a "tricky" nature, and very little was behavioral.