No, it was just so that you could see the feeling of both of
them at the same time, though Kovu could have been thinking
of Simba and seeing his face in his mind, but not the
clouds.

kovu probably didnt see any of the faces in the clouds after
he was exiled. the animaters just put them there so we would
see them and see how kiara felt and how simba felt. i highly
doubt kovu acctually saw the faces