Snap Data - How hard can it be?

So, you're likely a Bloomberg customer (isn't everyone?), perhaps you have AIM, TOMS, The Bloomberg Professional Services (BPS) Terminal, maybe Data License, maybe Server API, maybe B-PIPE. There's quite a lot of functionality and data available to you. But understanding what's technically possible coupled with what's possible within the bounds of licensing, can be quite complex. One of the more frequent questions we get asked is around the snap'ing of data., and you might imagine.. how difficult could that possibly be.