Time equality
A.A.Robb can be seen as the father of this concept: a continious Now spans in his idea the whole universe. Only communication is retarded by finite sometimes fast velocities. So there is light, sound and smell and the most fast is feeling by touch. In astronomy this time equality is called universal being space. All objects occupie a three dimensional equal time space. From there all kinds of information is transferred bij different velocities, of which light is the most efficient for large distances. The velocity of gravitation is immidiate according to the Newton formula, but thoughts that effects of gravitational disturbances travel with finite velocity are proposed in the theory of gravitational waves. Lienard Wiechert potentials describe the case that the velocity equals lightvelocity. Coulomb forces are (mostly) compensated in local envirement, so don't travel far as field. All matter has the same time.