'non condivido le ragioni di cui mi parli'
'non condivido le ragioni delle quali mi parli'
Can anyone explain what the difference between (1) and (2) is?
According to me, there is no difference, but I'm under the impression that 'di cui' has a singular connotation, even if I cannot say that it is singular or that it is used more proficiently when it is referred to something perceived as singular.