GREASE - Cha Cha's repeated scene

At the dance when the whole dance floor is clear when Danny and Sandy are doing there dance seen. Shorty after the scene when you see Sandy in back of Danny holding is waist. You see in the back left hand corner a far distant view of Cha Cha walking out of the crowd getting closer on to the floor. While you see that you are still able to see a big clear view shot of Danny & Sandy dancing together. Then it comes up to the scene where you now have a close up shot of Cha Cha walking out of the crowd looking at Danny. Right after that Danny & Sandy get closer in toward the crowd dancing. Then Sunny grabs Sandy and then Cha Cha goes after Danny.