Guys, in a business conversation the correct way to address a woman is by her name.
Not "Hon" Not "Baby"
I counted 3 "Hons" and 2 "Baby"s in a 3 minute group conversation that was part of a presentation. And if you are worried about negative events for pointing it out, I did point it out afterward, privately. And you know what? The sky didn't fall. I didn't lose him as a client.
He will be a better presenter in the future, and women will be more comfortable working with him. You don't have to create a confrontation to be part of the solution. Just letting someone know is sometimes all it takes.