CRM Notes Roll Ups/Connections/Parent Records

CRM Notes Roll Ups/Connections/Parent Records

I can not find or figure out a clear answer to how Notes in CRM roll up/into other records. 

Notes on Tasks that are related to a Contact and/or Other Record (Deal, Account, Etc) are visible in the Task and the Contact and Other Record.

Some Notes also seem to show up inside of Deals from other related records, but it seams inconsistent. 
Some Notes from Deals or other records will show up in a Contact, etc. but again it seams inconsistent. 

As an Example 

Deal "A Deal" has:
- a related Contact "First Last"
- a related Account "Company"
- a related Quote "Estimate for stuff" (Also related to Account and Contact)
- a related Sales Order "This is the stuff" (Also related to Account and Contact)
-- The Sales Order has a related Task "Send the stuff" (May or may not also be related to Contact)
- The Sales Order has a related Invoice "INV1234" 

This could go on and on along with throwing in several custom modules that have lookup fields relating them to other modules, and t
here could be Notes on every one of these records. 

So my question is: What Notes on what records will also show up on what related records?  





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