I have discovered the issue!
Let it be known, it's not just shiny surfaces or reflected light that cause problems... but direct light!
I have done some testing with base station positions, different locations and based on that I discovered that removing direct light from any direction stop the base stations from losing their tracking.
I tested further, florescent lighting has an effect on the base stations but not as severe. LED lighting has a MASSIVE impact on the base stations in a very negative way. Regardless of location, regardless of direct light or reflected light, the base stations get lost from each other EVEN when sync'd! (A+B cable Sync)
Be it a light bulb, LED especially, or other appliances such as a mouse, keyboard or anything that has an LED light can and will confuse the base stations. Which is why they both disconnect at the exact same time, then reconnect in an attempt to fix themselves.
Also, after discovering this, I dug a little deeper. It's not JUST the base stations affected by this but the controllers AND the Headset. With the sensors on these items, LED light blinds them. I held an LED light in the middle of the room with an on/off toggle, while holding the headset. Turning on the LED the headset lost tracking before anything else, turning the LED off, the headset reconnected.
In conclusion! LED and even florescent lighting confuse the Sensors in your VR equipment. Turning off all lights and blocking any other lights (with tape) will correct the issue of both Gray screens, headset disconnection, controller loss, etc.
If you test this yourself and it doesn't work, speak up because I know how frustrating this can be.
This resolution should be posted or sticky'd either somewhere in a FAQ's or a list of common problems/resolutions.
I intend to test further with other samples and scenarios.