Hi @peter.lomen, yes, Chartfactor supports multi-source for the visualizations and the Interaction Manager has the capability to filter all of them even if they are from different sources or providers.
I think that in your scenario, the problem could be that you have different names in each data source for the filtered field. Take a look at the Multisource filtering forum entry related to this issue, it’s very well explained and I’m sure you’ll find the answer.
You can also visit the Custom Metadata documentation for more info about this topic.
Hope it helps.