jabber jockey
A person who talks so much it's like they're trying to drown you in words. Or a radio host who thinks music is just a pause between his long rants.
My brother is a jabber jockey. He talks during the entire car ride and yells at the radio for not talking enough.
My teacher is a jabber jockey. She talks during the entire class and yells at the students for not listening.
My mom is a jabber jockey. She talks during the entire family dinner and yells at the silence for being too quiet.