Iphone while in car hears echo when she talks to me on my Iphone

[Eliot Rosewater]

2. In both our cars I am merely connecting the phone to the car via bluetooth.

Wait, I just remembered when I connected her phone it said I was connecting "hands free" and not the phone, per se.

Is there a way to fix that, as I recall there was only one option, it was called hands free but I dont remember seeing that before on her or my phone or car.

She is out of town, when she gets back I will try connecting it again but as I recall when the car recognizes her phone the only thing that comes up is "hands free" on the car screen, that is.

I just remembered, if I take my phone OFF the speaker in my car and talkl to her thru my phone and not thru my car, echo goes away on her end

I do not hear the echo.