2. I frown upon afterthought connectives, but they're probably not too harmful if we apply the rule that they take the narrowest possible scope.
But I think the narrowest possible in this case still covers {na}. Consider: {ko'a broda su'o da gi'e brode}. That has to be ge ko'a broda su'o da gi ko'a brode}. Because of its very nature {gi'e} has to have scope over the bridi-tails, even the one that comes before it. The only doubt is whether {na} in {na broda gi'e brode} belongs to the first bridi-tail or not. From the grammar there is no doubt it belongs there.