LOS, Glass LOS question Options

[Nikoli]

Maybe this is another case of research, but why is it that clear glass doesn't block LOS where tinted glass does?

I ask this because, when looking at glass, you are not receiving the photons reflected off your target, those were absorbed by the glass.
Photon strikes the glass molecule, the atoms in the molecule absorb the photon (remember, it's a wave with particle like properties) and pop some eletrons out an "orbit" or quantum level. Since this requires more energy to maintain the electrons slide back to the starting orbit and release another photon in the same direction (prisms, magnification and cheap glass aside), which strikes another molecule and starts the process all over.

Basically, anything solid between you and your trarget should block LOS, regardless of opacity.

Or

There is no LOS because air molecules would act int he same manner as the glass.

Or

Computer screens and monitors should also grant LOS because the photons are still being transmited in the same manner as looking through glass. Therefore, anything that allows you to see the target live should be considered LOS, inclusing TV.

So, which is it?