That’s how it works; multiple triggers are logically ORed.
BTW, post automations in YAML format, not screenshots. See FAQ guideline 11:
The way you designed your automation makes it behave like this:
When either of the two motion detectors triggers the automation, it turns on the garage lights then delays for about 20 minutes, then turns off the lights. During that delay, it ignores any subsequent triggers.
If that’s not how you intended it to work, describe what you want.
One or the other will trigger your automation.
You will want to set the automation mode (top-right most 3-dots > Change Mode) to “Restart” so the last motion trigger will override the previous one (if any), and thus restart the Delay.