What is the meaning of the two "la" words following the 'que" in the sentence
Podías decirle a uno de ellos que la siguieran pero no la podían ver.
What is the meaning of the two "la" words following the 'que" in the sentence
Podías decirle a uno de ellos que la siguieran pero no la podían ver.
Basically, it means, "you could ask one of them to follow/track her, but they couldn't see her"
As you can see, we are referring to "her" twice, so we have used the pronoun la twice for it in the original sentence. In your example there is a couple of subordinate sentences (introduced by those "que").
Podías decirle a uno de ellos que la siguieran pero (ellos) no la podían ver
Podías decirle a uno de ellos que la siguieran pero no podían verla
Podías decirle a uno de ellos que siguieran a la mujer pero no podían ver a la mujer
Note: in the last case, that la is an article instead of a pronoun. In the others la stands for "la mujer", "la chica", "la persona" or that who "they where asked to follow but they couldn't see".