To offer a slightly more specific critique: A relative clause is not a sentence. It’s a noun phrase. As such, it can’t be the second sentence in a Sentence As Object (SAO) construction.

I specifically did not give this response because it doesn't hold up given other areas of Klingon grammar.

More than once we've learned that where Okrand says sentence he really means verbal clause. He says that conjunctions join sentences, but he also uses them between dependent verbal clauses a lot. He says that subjects and objects go on sentences, but they also go on dependent verbal clauses of all types.

Furthermore, Okrand himself has used 'e' as the object of a non-sentence, in paq'batlh:

qeylIS Qaw' 'e' nIDmeH
    yerDaj weH molor
    'ej juH qachDaj meQmoH

Molor did not destroy Kahless
    By burning his house
    Or ravaging his lands.

(The translation is not literal. The next line starts "Instead, by doing so..." meaning the emphasis should be that Molor tried to destroy Kahless by raiding and burning.)

This stanza has a sentence-as-object construction, qeylIS Qaw' 'e' nIDmeH, in which the second "sentence" is a purpose clause.

Only a few lines later there's another one:

Hoch qInmoH mu'meyDaj
    ghob 'agh 'ej val
    yIntaH 'e' luleghmo' chaH mer

All were bemused by his words,
    Wise and full of spirit,
    And astonished to see him alive.

Here, the sentence-as-object, yIntaH 'e' luleghmo' chaH because they saw that he was still alive, has a subordinate clause as its second "sentence."

We get still more (I'll give shortened versions):

watlh 'Iwraj 'e' lu'aghmo' nuHmey jej

jatlh 'e' mevDI' qeylIS

bImej 'e' vIchaw'mo'

SoHvaD quvwI' qem Hegh 'e' wIvDI' Hegh

pop Hevchugh quvwI' 'ej 'e' DaqaSmoHchugh
(Simultaneously demonstrates conjoining subordinate clauses!)

jatlh 'e' mevDI' nuvpu'

'qa' qo'Daq paw chaH 'e' maqmeH

Suv 'e' mevDI'

and best of all...

veqlarghvo' narghbogh loD
    chutDaj bIv 'e' ngIlbogh loD
    DaH pongDaj Sov qotar

Now Kotar has the name
    Of the one who eluded Fek'lhr
    And dared to defy his rules.

...which is an example of the very kind of relative clause that you said can't happen.

If it worked (and it doesn’t), then the word order would have to be (and keep in mind, this is not grammatically correct but merely a step closer to being grammatically correct in order to show why the whole idea doesn’t work):

Dun [Qap yuQDaj ‘e’ tulbogh nuv].

This is grammatical and is the correct formation for what he tried to say.

It doesn’t work because you can’t have the first sentence in SAO contained within the second sentence. It’s not a “Sentence As Object”. It’s a “Sentence As Object Within Another Sentence”, which is not a valid grammatical construction in Klingon.

Says who?

In general, a Type 9 suffix on either main verb in SAO should set off alarms, since the addition of Type 9 suffix turns the verb into something functionally different from a main verb, and SAO requires two main verbs.

Nope.

-- 
SuStel
http://trimboli.name