Display two visualizations in the same panel?

Is it possible to display two visualizations in the same panel? I have two things I want to graph, my temperature sensors and my heater state. I’ve found the discrete panel plugin to be perfect for the heater state and the graph is fine for the temperatures. But I can only figure out how to put them in two different panels and the time axis don’t really line up correctly. Is there a way to overlay them?

Unfortunately I believe not, although I think this would be a good feature to
add.

Antony.