Whats up with people who can talk on and on without needing a word from you?

My boss and a coworker are like this. I have tried to say something while either talks "to" (more like "at") me and i usually get cut off and they dont even listen nor care to hear or know that i even said anytning. The weird part is that people like this want to then make me feel like something is wrong with me by saying 'no offence but you're quiet'... Uhh, really?

Whats up with people who can talk on and on without needing a word from you?
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