The reigning European champions then closed the game out in the second half, and when asked if he thought that it was their finest display so far, Ancelotti told Sky Sports News: "I think so, also because of the difficulty of the opposing team.
"In the first half we were fantastic and then in the second half we had good control of the game and the result.
"It is difficult to say [what pleased me most]. I don't have to say anything to the players because they played really well, with confidence."
The Blancos sit top of Group B with nine points, with Liverpool, Basel and Ludogorets Razgrad in a three-way tie for second on three points.