Overlapping Bars in Chart

Hello all,

I made something to visualize a schedule.
It shows the time a truck comes in and how late it goes out.

Now i'd like to add an extra bar to the chart that shows how late the truck needs to ready.

I attached the file to this thread.
I drawed the new bars to the chart to give an idea of what I'm looking for.
The data for the new bars are mentioned in range T2:T3