text:  And during one of the primary debates, you and Biden were wrestling over health care. And eventually you said, are you forgetting what you said two minutes ago? Now, as I recall, a lot of people thought that was a disrespectful moment on your part. Thinking back on that exchange now in the light of the debate with Trump, I wonder what you make of the criticism you'd received in 2019. And were you hinting at something?