Grammar Terminology Like Asyndeton, Apposition, a kind of renaming

After reading a recent Language Log post by Roger Shuy containing the string

It's better to let people see how sausages are made, what's going on.

my dad wondered, is that a sentence?

First of all, that sentence was not written by Shuy, but by Ernie the Attorney, as is mentioned in the original post. And second of all, yes it is a sentence, even if you asked the strictest prescriptivist grammarians. And to prove it, an example from Shakespeare's Julius Caesar, 2.4.15-18:

Yes, bring me word, boy, if thy lord look well,
For he went sickly forth: and take good note
What Caesar doth, what suitors press to him.
Hark, boy! what noise is that?

The original sentence could mean something like

It's better to let people see the following:

1. how sausages are made
2. what's going on [when you make them]

The phrase "what's going on" is in parallel with the phrase "how sausages are made" and could be providing a distinct second element with asyndeton (with an omitted "and" or "or"). Or it could mean something like

It's better to let people see how sausages are made, which is essentially letting them see what's going on.

where the second phrase is a new (and better) name for the first, as in apposition. It makes little difference in this case, but I'm leaning toward apposition. I think the reason my dad mis-read the sentence is because the parallel phrase is at the end, and without a following phrase there are many possible grammatical mis-interperetations.