어땠어요? vs. 어땠나요?
Hi! I'm wondering what's the difference between the two phrases 어땠어요? and 어땠나요? As I understand it both are used to ask someone "How was it?" but I don't really know in what kind of situations you should use 어땠어요? and when to use 어땠나요?, so it would be great if someone could clearify this for me.