The one they did on my Bear (GSD/Akita) and my big blue cat was completely away from me. They actually took them into another room where they couldn't see me at all. Kharma would NEVER go for that, lol.
I don't - ideally - ever want to see a Fila that is comfortable with their person out of their sight around strangers. Part of the Fila's inherent nature, as much as it is to distrust strangers, is to want to be right there, or at least within sight - of their people when they are away from home. Kharma will stay - reluctantly - with people she knows and trusts, but she isn't thrilled with it.
You can also treat the 'supervised separation' as an out of sight stay- I've got a friend who passed it with a dog that way (dog was well-trained to IGNORE any commands (or interaction in general, unless released to greet) from strangers and return to handler EXCEPT when placed on a stay. 
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