Does this work as designed for you?
I set this up in my bathroom. One sensor for the bathroom and the other for the shower. The aggregated group would always change to inactive when the first sensor that triggered the active stopped seeing motion.
Eg… if the main sensor triggered the group and turned on the lights. Then I get in the shower. After the timeout. The aggregated group says inactive even though the shower sensor is still active. Could not get this one to work for me.