"How do you go from being such a passionate opponent on such bedrock principles for you, and now you guys seem to be pals?" Colbert asked.
"It was a debate," Harris said about her fierce attacks on Biden.
"Not everyone landed punches like you did, though," Colbert said.
“It was a debate," Harris repeated, laughing.
"So you didn't mean it?"
"It was a debate," she said again.