Sometimes I’ll run into a friend on the street. He’s with his wife. They’re both Orthodox. My friend will introduce me to his wife and she won’t say a word. She just stands there with pursed lips. She’s mute.
I remember Rabbi Akiva Tatz advising people not to make unnecessary conversation with a friend’s spouse. Why do you need to talk to her for?
The more Orthodox you go, the more the sexes are separated.