Be alerted about inactivity after motion already detected and triggered?

Yeah, i’m tired; what I suggested isn’t going to work for your use case.

The two smartapps that @TN_Oldman get around this by checking at a different part in the cycle. One checks to make sure that a particular door/cabinet has been opened within a set period, which is good for making sure that someone did get out of bed each day but doesn’t really fit your use case.

The other one is very specifically checking movement back into a zone, typically the bed, and I’m not sure that’s going to fit yours either.

To use stacked conditionals of the kind that you are suggesting, you probably need to use webcore.