Hi, everyone.
Could you help me understand this use of "between" ? I don't understand the sentence construction in bold?
Most important, beginning with Homo erectus, we get this increase in brain size that goes on accelerating right up to almost the present day. The brain is a very hungry organ. It needs a tremendous amount of energy. Between increasing the proportion of the food that is actually digested and allowing you to digest it with much less physical work, cooking gives you more energy.
Thanks!
Source: http://transcripts.foreverdreaming.org/viewtopic.php?f=646&t=27418
AHD "between" def. a. "By the combined effort or effect of: Between them they succeeded.
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AHD "between" def. 5.a. "By the combined effort or effect of: Between them they succeeded."
https://www.ahdictionary.com/word/search.html?q=between
The two things working together to give you more energy are "increasing the proportion of the food that is actually digested" an