There are many processes by which have been formed even if same size.
So in this script, daily is overlapped on the currently chart as default, and that can be changed.
Only real body is shown so as not to interfere with the currently chart.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.