Okay. So your definition of heart is just playing well all the time.
My definition is getting up when you get punched in the face. A great boxer can have heart. But so can a mediocre boxer that doesn't give up. Right now, due to periods of lack of focus, they are mediocre boxers taking haymakers, hitting the mat, but then crawling back up before the 10 count only to eventually lose TKO.
They won against Villanova in a game they should have lost given the first 10 minutes. They nearly beat Syracuse when they were down 17 in the second half. They fell apart here, but had 2 shots to tie, and the ball down 3.
Am I happy with those results? No. But it doesn't make me question their hearts.