I notice that a lot of things are synched between SC and SN...

As an example, I changed my alarm and my display settings in SC, and the next day, they were set the same way in SN...

However, I noticed a few things did not get synched...as an example, I deleted the "Music Store" from my SC, but it wasn't deleted from my SN... Also, my favorites were changed in SC, but SN was not changed to reflect these changes...

How does all of this work?