Looks like you are right @pseudonym . The last paragraph in Bruce's post below confirms that the waits are cancelled, unless something has changed in the meantime.
I'm not sure what you mean by "secondary executions". Rules are a script that runs when the rule is triggered, every time it is triggered. Delays and Waits suspend the script for some interval, and under some circumstances the script will restart. Waits are a special case because they entail temporary device event subscriptions. As a general rule, multiple simultaneous execution of the same rule's script is a recipe for failure, and is to be avoided in the way the rule is written. Such siā¦