Is it possible?

Also neil will soon secretly do nanno and ananya's dna test to find out how they are related, and i'm sure neil will find out their DNA matches, because this time neil is doing this secretly, not like last time with the amol and sketch artists plan. This time nobody would be able to find out about neil's plan.

So in that way he must have found out about ananya being avni by the marriage day. There's no way that he can't have found out even after speaking to nanno and the dna test that she is avni, unless something goes wrong in his DNA plan, which I don't understand how it is possible for somebody to know with the way he will secretly do it.

So my question is that is there a possibility for neil to know by the day of marriage that avni is ananya, and possibly could be in on the bride swap? I really hope this is true, although i know there is a very thin chance of that happening. My hopes are still on shweta being in on the bride swap otherwise avni is going to be in a lot of mess.