[jdmichal]

No, it didn't. Or, rather, if it did, then so does every human. The neural network is doing what NNs do and associating particular input patterns with particular neurons / pathways. So the same or highly similar concepts end up in the same place, which is how they are connected for the purpose of translation.

All this likely has similar analogues in the human brain. That is, I would be rather surprised if there wasn't a dedicated neural pathway identifying a banana, which fires whenever the thought of a banana is invoked. This is also where banana is associated with yellow and food and delicious etc.

Also, don't forget that in the human brain reading and listening may as well be two separate languages processed by entirely different portions of the brain. I would have to see pretty convincing evidence to believe that reading "banana" and hearing it don't at some point touch the same part of the brain where the concept and associations of "banana" "live".