There is no magic going on here. It is just like normal file directory access. One thing that *is* important is access privileges. The actual network location you mention suggests you want to write to the *remote* storage location ? If that is the case, then the oracle software needs access to that.
More details in this post
https://asktom.oracle.com/pls/asktom/f?p=100:11:::::P11_QUESTION_ID:241814624807 In terms of "How are those two paths connected?" this is outside of Oracle. It could be symbolic links on Unix, NFS mounts, or Windows shares etc etc...But we dont do any magic inside the database. We just access files as per normal.
Hope this helps.