to be fair dick cheney was not most friendly in that 2004 debate with edwards. he was not that polite if i recall. but your right biden went to far in attacking ryan at times. let ryan get away with it because of that.
to be though i think he be good vice president though i doubt we agree on that.
Dick Cheney was like Ryan, sticking to the issues.
He maintained a cool head and said everything he knew matter of factly. Never laughed or raised his voice.
He was not rude to anyone.