How would you rewrite this using double direct object pronouns?

Question

¿Por qué le vas a comprar una contestadora?

Could you please explain? Thank you.

Answer 1

Are you wondering about replacing "contestadora" with the direct object pronoun "la"? If you wanted this sentence to say "Why are you going to buy him it?" it would be "¿Por qué vas a comprársela?" The "se" takes the place of "le" because it just sounds awkward saying "lela." Hope this helps!

Answer 2

Noone could rewrite because there aren't two direct object in your example,Le is indirect object (him or her) and una contestadora is direct object.

Le compras una contestadora = You buy him an answerphone.

¿A quien compras una contestadora?,A el (=le) = To whom do you buy an answerphone?.Him (=le) (indirect object)

¿Qué le compras?.Una contestadora = What do you buy him?.An answerphone (direct object)

Nadie podría escribir de nuevo porque no hay dos complementos directos en tu ejemplo.''Le'' es complemento indirecto (him o her) y ''una contestadora'' es complemento directo.

Le compras una contestadora = You buy him an answerphone.

¿A quien compras una contestadora?,A el (=le) = To whom do you buy an answerphone?.Him (=le) (complemento indirecto)

¿Qué le compras?.Una contestadora = What do you buy him?.An answerphone (complemento directo)