Overlay one bar on top of another bar

Question:

Is it possible to overlay one bar from the “Combo Toolbox” on top of a different bar from the “Combo Toolbox”?

Answer:

Two bars can originate from a symbol. Typically the connections from one symbol will go to two symbols, there is no reason why the two connections could not target a single symbol, achieving the effect you want.

Set up the two bars in the toolbox.
Add a symbol + bar + symbol combination to the schedule.
With , on the schedule, click once on the left-most (start) symbol.
Click once, in the toolbox, on the connector to use as an overlay.
Click once on the right-most (finish) symbol.