Two stages, first with head of operations who was very interesting, the second was supposed to be a product expert but on speaking with them their role was not clearly defined. After this I was told after they spoke with their hiring manager that I was great but 'not an ideal fit', and when I asked for constructive feedback to improve I was unfortunately completely ignored. I didn't meet with the hiring manager so this persons decision was not based on my interview, I have seen that they did not fill the role so It seems they had a change of plan and decided not to explain themselves.