Detect if drag is over other element in KonvaJS

Is there a way in KonvaJS to somehow detect when the RED box is dragged over the BLUE box?

Codesandbox: https://codesandbox.io/s/jolly-cloud-u5m9x1?file=/src/App.js

rect1.on('dragend', (evt) => {
  console.log(evt); // detect if dragging is over the rect2 (blue one)
});