Pretty simple.  They are individual prototype actions, proto actions are triggered sequentially, there’s no reason not to be able to combine them except for the fact that Figma “has decided you can’t do that.”

Use case: I have an overlay menu. User clicks to open overlay menu, which has links to overlay views.  User clicks menu option to open overlay, I need to close the original menu overlay and open the new overlay.

In a normal world I would just add both prototype actions and put them in the necessary order; close for the menu overlay first, then open overlay for the new panel.  Unfortunately “not possible ace”.

This is silly and makes no sense.  Either provide a combined control (if you feel it’s needed) or just let us assign the necessary actions and put them in the order to effectively execute.

-rt