Complex sentence: Pengolodh included it as last chapter to the Lhammas because of the implications of spoken language on thought-transmission, and since the Incarnates (Elves, and Men) use a spoken language, telepathy can become more difficult with time (cf. hröa).
Split into simpler sentences: Pengolodh included it as last chapter to the Lhammas because of the implications of spoken language on thought-transmission. Because the Incarnates (Elves, and Men) use a spoken language, telepathy can become more difficult with time (cf. hröa).