This video might not make much sense unless you understand the WAIT parameter on Create Task flow acitons. Here's an explainer: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-UP_7VB-b-Eg.html
Great video. We use the same mechanism in HR Onboarding automation process where we need to check 4 conditions at the same time. We check when an employee was hired and based on that information we will send different tasks/emails. So far it works :)
I gave this some more thought. If you uncheck wait on 1st task, and check wait on the 2nd task, the parent Incident closes *as soon as* the conditional task closes, regardless of the state of the 1st task. So it won't work the way we want. Both tasks have to close if both tasks are created.