The word “náttúrulega” ▶ Play (meaning naturally, of course) gets extremely shortened in spoken language when it has the meaning of “of course”, and so it is pronounced [náttla]. ▶ Play

In addition to “náttúrulega” being shortened to [náttla], you must not forget that vowels get dropped when they meet at the edges of words. Therefore, the sentence “náttúrulega ömurlegt” is pronounced like [náttlömurlegt].