Has anyone worked in a place where devs were deliberately given uninterrupted time, time where they were out of contact? The closest examples I have personally

Has anyone worked in a place where devs were deliberately given uninterrupted time, time where they were out of contact? The closest examples I have personally is contracting and co-running my own business, where I'd just turn off all my points off contact and work. (I set my hours.) It was way more than an hour a day of coding, let alone coding+thinking. I thought it was great.