I had a day of interviews (~7 people) at my first job out of college in 1986, but my hiring manager had also been the person I first talked with at a career fair.

I had a day of interviews (~7 people) in early 2000 at an internet consulting firm, mostly people I worked with directly once I was hired.

Whatever virus those places had, it seems to have spread.

I've also been hired after one or two conversations with one or two key people.