Hi.

Question:
Am I able to connect DJI Light Bridge Ground station to DJI Inspire One?
For the sake of Video Downlink and Gimbal control if possible??.

No, you should just use a second transmitter.

Even for showing video from inspire? They say it's Lightbridge they are using on Inspire 1.
And Yet it is not compatible with LightBridge ground station?
How come?

The Lightbridge ground unit and the Inspire air unit are not compatible.