Views... two panes each contains a view.  One is the exposed filter, other is the fields.  How can they communicate?
Exposed filters are only linked to the view they were exposed on.

I haven't done this before, but I think the correct method would be:


Create a view
Expose any of the filters you need to on that view (not a separate one)
In the advanced settings of that view, set "Exposed form in block" to yes
Add the block to your panel (not a separate views pane)