I grew up around a lot of people that could fake speaking in tongues. A few actually did. Mostly women. By about 5 to 1. My mother, for instance, does this on a regular basis. She calls it her spirit language, or prayer language. She was the one who taught me. If you focus on the gibberish they babble than you'll miss whats happening. I know this language because I was born with it. It's how I told my mother I had a dirty diaper or needed a bottle. Everyone is born with it. They just forgot. Some of us don't forget. This language is a pure form of communication. One without inference or misunderstanding. It's imparted meaning, or impression. I think you know what I'm talking about here. Some call it Dream tongue. It's great way to pray when you don't know what to pray for.
My mother is an empath, but she is considered an intercessor. She is told to pray and so she does. She has interceded for me many times. Last time was in October when me and my daughter had a crash. We both walked away from it. The truck was totaled. She had some glass in her shoe. That was the worst of it. I thank God that He woke my Mother that night.
You can call it the language of Heaven and angels. You would be right in saying so, but this is also how people speak to me when they're not talking. @bill-walker you already know this language! I call it empathy.