Can cellular offices be more fit for communication?

According to Michael Brill (see ref. below), founder of the North American workplace consultancy firm Bosti, the cellular (private) office layout encourages communication, compared to the traditional cubicle (open plan) layout.
- Could it be because the need for communication is greater than in an open area?
- Can it be so that it is easier to communicate more freely in those spaces?
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Source: Brill, M. with Margulis, S., Konar, E., and BOSTI, Using Office Design to Increase Productivity. Buffalo, NY: published Vol. 1, 1984 and Vol. 2, 1985, 400 p.