Pep Guardiola warned his team at half-time about Leicester's threat - despite his team leading 4-0!
The Manchester City boss said he never felt his team were in full control even as they blitzed the Foxes in the opening 45 minutes and racked up goals through Kevin De Bruyne, Riyad Mahrez, Ilkay Gundogan and Raheem Sterling.
The Boxing Day crowd at the Etihad were jubilant, witnessing a classic City performance, but Guardiola felt the seeds of Leicester's second-half comeback were sown in that first half.
"We were not in control in the first half even at 4-0," he said, "Every time they get the ball and arrive in the final third to create chances.
"We were clinical in the second half. They changed the shape and after they didn’t want to press, they sat deep and waited - football is like this, it is unpredictable and that is why it is so nice.
"Two isolated actions like the run when Ayme (Laporte) slipped. The teams are good and when that happens they can do what they do.
"Even in the first half, with 4-0 playing really good, creating a lot of chances and to score goals, every time they arrived in the final third, they create chances.
"The game was open even at 4-0, it was not closed. They are a big club with quality. Second half they changed the shape.
"We know the quality they have in the build-up, when Maddison can play and Tielemans can play and Kelechi and Lookman, the last six Premier League games we won five but so so difficult.
"They have an exceptional manager. Ayme slipped and Ruben had one yellow to be suspended and was not aggressive enough. "Then 4-1 and 4-2 and the mindset of the players changed. 4-3 the game was close to be equalised. We were more patient and they had two more chances and we had chances too and set-pieces we won the game."
