Gravitational waves are the fundamental carrier and speed limit of the universe
Since gravitational waves and light travels at exactly the same speed, what if light is dragged/riding/partnered through space using gravity waves. and it is not light speed. but gravitational waves that limit how fast light can travel. And when photons interacts with matter the photon dislodges from the original gravitational wave, it is then redirected and it hitchhikes onto multi directional gravitational waves from distant stars/black holes/planets/galaxies. meaning the speed of light is not fastest thing in the universe but should be measured in gravitational wave speed
Light does not travel at light speed independently
The speed we call "c" is actually the natural propogration speed of gravitational waves, not an inherent property of light itself