The binding "da", according to the book, must end at the end of a sentence.
If you want a "da" to keep it's referent across seperate sentences,
But "da" does not have a referent to keep if you escape the scope of its quantifier.
just put them into one sentence: da klama .i da sipna Something comes. Something (else?) sleeps.
da klama .ibo da sipna Something comes and it sleeps.