One energy monitor, two appliances, finish notification

I’ve got a washing machine and clothes dryer both connected to an Ikuu zigbee power point that has 2 switches but only a single energy monitoring entity.

From the single entity power graphs I can see a fairly clear pattern for the washing machine. The dryer is less defined (heat pump that we normally run on auto mode) but still has a visible pattern.

The issue I’m trying to solve is getting notifications when the washing machine has finished running while the dryer is still going or vice versa. I

Washing Machine

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Dryer pattern
Dryer

Both running at the same time
both