1 Better exposed Filters for 2 views blocks I would like to make a page with 2 Views blocks. The views show the same content type, but in a different format.

Block A contains an OpenLayers map.

Block B contains a listing result. 

I want to filter both Views based on taxonomy, but with one exposed filter block.

I've made one Better Exposed Filter for block A, but I don't know how to control both blocks with one exposed filter.

Can anyone help?
You want to create an attachment view display and add it to your main display. For example, if you currently have the OpenMaps display working, create a listing display as an attachment and attach it to the OpenMaps display. Make sure you set "Inherit exposed filters" to "yes" to ensure both displays are using the same set of filters.
In views 3 you can find this settings in the Attachment display settings: