Show 3 different Views displays for same exposed filter block or link Views displays?
You can use only one exposed form of one of the displays. The other exposed forms should be set "as block", so they are not shown (as you will not set them active in the block configuration). As exposed forms work via GET-params, you simply can use the same "Filter identifier" for filters that shall share the same value.

An exposed filter in display2 with identifier type will use the same value as the exposed filter in display1 with the same identifier type.



This way you can control all three displays by only using one exposed form.