They were a technical, team interview and management interview, with another team scheduled after that. Only person who was open about feeling it was a waste of time was the director in the third interview, who stopped it in the middle of an intermitable HR ramble and offered me the job (presumably so she wouldn't have to keep wasting her time sitting thru them).
It was extra ridiculous since the position was explicitly written for me and I am the only person alive who is qualified (given I built the system...), and they still put everyone through all that bullshit process-wank for what was an inevitable outcome. Ugh.