I actually came up with a solution now. I will leave a CodePen here to illustrate what it was I was after and to help anyone is in a similar situation in future:   See the Pen MWbJgzB by michaelpumo (@michaelpumo) on CodePen   As you can see, if you open the console, you now get events when entering or leaving each list (each lists consists of 2 items).   The recalculation of start and end points also allows for the desired visual eff
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