If I use a CC license on something, I always make sure everything I use IN that work is covered by the same license (or something more open). For example, I wouldn’t use CCBYND or non-openly-licensed photos in a blog post that I was licensing CCBY. Though I would use a CCBY photo in a post I was licensing CCBYSA (for example). Not sure if that is the going standard? I think I just assumed that’s how it would work…