689- Remember the sample puzzle at the front? There's your answer.

I can see what I think it is, have for awhile, but the second half plus the first half is not a word. Should the answer be an actual word? Or is it just a mashup of two halves that makes no sense, and I'm just not combining the right halves?

I tried that route too, despite those not being words, but am still coming up empty. Even separating them with a colon doesn't work.

Well, dots can be connected in any number of ways. There's something obvious (to me) just by looking at it, but **** is not the right answer. There's also the matter of the [Key64}:{Key65} at the bottom, too. But the two keys together don't really form a riddle of any sort...