Occlumency - REDUX

[Steve]

No: HPFGUIDX 191711

I asked this question before in the other OCCLUMENCY discussion, and it got no response, though I think it is a fairly significant question. 

We see to series of events which are clearly stated as Legilimeny or are implied as possibly some type of Legilimency. 

1.) The high degree and very specific ability of Voldemort to extract information and memories from people, and to know with certainty whether they are lying.

When Harry shares these 'mind reading' events, it clearly see the memories that are being extracted. That is, because Harry see it, we assume that is also what Voldemort is seeing. 

2.) The Legilimency/Occlumency lessons in which Harry is very aware of the memories that are being see by Snape. 

3.) Those time when Harry merely feels that his mind is being read. That Snape or Dumbledore or who ever, and see his thoughts. Yet, this is no more than in intuitive feeling. 

So the question is -

Can we assume that the degree to which Harry is aware of the information that is being read is in turn proportional to the depth of intrusion into his thoughts?

In other words, because Harry only has an intuitive sense that his thoughts are being read, that in turn, the 'Reader' is probing no deeper than to get an intuitive sense of whether Harry is lying?

We see in the Occlumency lessons that Harry is very aware of the thoughts that are being read. He shares those memories along with Snape. 

And is this one of the reasons why Legilimency is not a seeming big concern to the wizarding world. That people are aware when their minds are being probed, are equally aware of the degree to which they are being probed, and upon deep intrusion are aware of the thoughts and memories that are being read. Further, unless the "Reader", as in the case of Voldemort, is making a forced and brutal intrusion, the person being read, has the ability to stop the thoughts or memories, or close their mind?

I do suspect that a casual intrusion as in a business deal, is more easy to stop than the brutal methods of intrusion used by Voldemort. 

So, again, for anyone who is interested -

Can we assume that Harry's awareness of the intrusion and the thoughts being read is in proportion to the depth and intensity of the intrusion coming from the "Reader"?

Just curious.

Steve/bboyminn