Their debate, instead of turning into a brawl, kind of "degenerated" into more of a love in. At the end, both agreed to varying extents that the reanimation of inflation, after a long hibernation, from a 1.9 trillion stimulus package was a risk, and given most of it would probably pass, we will get to find out the the result of that roll of the dice, one way or the other. But nobody knows that result at present. Gamestop came up of all things.
https://www.bloomberg.com/news/articles/2021-02-12/summers-and-krugman-debate-stimulus-here-s-a-blow-by-blow-account