Actions are triggered in series, but don’t wait for the previous one to finish. If an action relies on a Result of step x then it will wait for that previous step’s result.
No
No
The delay action is only for front end animations pretty much. They won’t delay actions plus hardcoding a certain amount of time is pretty rough because what if you choose 1 second and the action needed 1.05 seconds?
Or yea @dorilama 's link basically just answered it all…