chart.js stacked graph that overlaps

You have to add these parameters to your code - enable stacking for X and disable it for Y axis:

  xAxes: [{ stacked: true }],
  yAxes: [{
    stacked: false,
    ticks: {
      beginAtZero: true,
    },
  }]

Nevermind, I found the answer.

options: {
              scales: {
                xAxes: [{ stacked: true }],
                yAxes: [{
                        ticks: {
                            beginAtZero:true
                        },
                        stacked: false
                }]
              }
            }

You just need to set the xAxes stacked to true and yAxes to false