Question

why did they 3 not exchanged a single word while driving back from poleta

Answer 1

They 3 didn't exchanged a single word while driving back from Poleta because the 2 boys didn't want to reveal their secret and the narrator respected their feelings so he didn't want to reveal that he knows their secret

Answer 2

They 3 didn't exchanged a single word while driving back from Poleta because the 2 boys didn't want to reveal their secret and the narrator respected their feelings so he didn't want to reveal that he knows the secret.