2 radios one car

I need to be able to use 2 way communication in my car. A kia niro.
I’m an Uber driver and just had a partition installed. It muffles the backseat a lot.
I need a device I can use in the back seat and my driver side seat that will not give feedback.
Just something simple where we can both talk and hear each other at a push of a button.
Thank you
2 radios 1 car

You don’t want radios at all, but this kind of thing.