What CLAs do, is explained in the first half of the sentence. What it means in practice (in the context of talking about relicensing) is hence what "practically

What CLAs do, is explained in the first half of the sentence. What it means in practice (in the context of talking about relicensing) is hence what "practically speaking" means. Anyway I've edited it to avoid using the word "ownership", which might confuse the intended meaning.