haQer
Its interesting that you mention this. I just opened up this sefer on mussar from the Chida. In it he quotes the Zohar that someone who talks in shul doesn’t have a chelek in the HaShem (whatever that means). It goes on to say that he is cursed in shomayim etc.
Then he says the RaMaK and Arizal did not even let people speak divrei Torah in shul (bear in mind there is a difference if the shul is used for learning and davening vs. just davening).
So I’m not so sure the ezras nashim is a good option for talking sichas b’teilim. If they’re discussing the parshah or having a va’ad that’s would probably be fine since most shuls are used for learning as well these days.