It would be nice to be able to make a third call to QuickChart requesting that these two charts be rendered together on the same page as part of a dashboard.
Just a feature request to consider for the future.
Thanks for the suggestion! I hear this feedback from time to time. Being able to “compose” charts is definitely on the todo list! Just a bit tricky given the amount of customization people tend to want when putting multiple charts together.
In the meantime, I agree that embedding multiple iframes might be a workaround.