Scenario: I have to run two applications simultaneously on a user pc (many of them). Each application will access its own remote server over the internet via separate VPN. Application A will receive a notification from its server. Application A will activate application B and send keystrokes to cause the screen to populate. The pc user then proceeds to work on application B. When done, the user clicks OK on Application A to request the next transaction. How are multiple VPNs configured to allow this to occur without one VPN blocking another?