GH- I just realized what the reason for your confusing the two issues may be.
I think that when posters (such as myself) referred to “nursing untzniusly”, you thought that they meant that the very act of nursing in public was untznius. That was not what I meant, nor do I think that was what anyone else meant.
I was referring to nursing in public without attempting to cover oneself, and I believe that was what the other posters meant as well.