Breakdown of El representante con quien viajo habló mucho de ti y de la innovación.
de
from / of
y
and
hablar
to speak / to talk
mucho
many / a lot
Questions & Answers about El representante con quien viajo habló mucho de ti y de la innovación.
Why do we use quien here instead of que?
Because of the preposition con. In Spanish, when referring to a person directly after a preposition, you cannot use que alone. You must use the relative pronoun quien (for one person) or quienes (for multiple people), which translates to "whom".
Is it possible to use a different pronoun instead of quien here?
Why is it de ti instead of de tú?
After most prepositions, including de, you must use a prepositional pronoun instead of a subject pronoun. For the informal "you," that means changing tú to ti. (Also, while the word sobre means "about," the verb hablar most naturally pairs with de to mean "to talk about").
Why does the sentence say y de la innovación instead of just y innovación?