I've done it for short stretches (couple weeks), and found I needed more sleep overall to get close to the same waking clarity as when I sleep for a single peri

I've done it for short stretches (couple weeks), and found I needed more sleep overall to get close to the same waking clarity as when I sleep for a single period. So I'd need 2 x 4.5h blocks to get close to how I'd feel with 1 x 8h stretch. Even then, only close. Couldn't quite get it to feel the same and definitely not better. TBH I think most of the 'off' feeling about it is in how it broke my normal perception of days and time passing. I spent a lot more time having to consider where I was, temporally, and how it lined up to anyone I needed to interact with.