Can the “open mouths” of the enemies be compared to a prior, seemingly similar expression (2:16)?

There is a resemblance between Lamentations 3:46 and Lamentations 2:16. The wide opening of the enemies’ mouths is an expression of their pleasure derived from Israel’s misfortune.  The difference is that in the previous verse (Lamentations 2:16) it was against the personified daughter, Jerusalem, while in Lamentations 3:36 those who are exposed to mockery are the writer and the people he is representing (Mackay, page 160). Another difference is that the text in Lamentations 2:16 was directed against Jerusalem while the latter is a prayer to God. The writer links his prayer to the earlier passage, because the enemies and their actions are similar in both texts.¹