In this paper it is considered the physical meaning of simultaneity and synchronization, that has also been addressed in other previous papers, based on the existence of a Preferred Frame where the one-way speed of light is isotropic. Usually in the standard Special Relativity what is considered is the Einstein simultaneity and Einstein synchronization that has been introduced by Einstein in the 1905 article “by definition”. In the standard interpretation simultaneity and synchronization are not considered since the Einstein speed of light is considered the speed of light. However, in our previous work we have shown that this is a terminological confusion, a paralogism. Now we explain why this is so with a very simple concise formalism using two clocks in every point of a frame, frame that is moving in relation to the Preferred Frame, a synchronized clock, and a Lorentzian clock. With this approach the solution of the conventionality of simultaneity and synchronization controversy is addressed. This proposed formulation is based on the existence of a gap of “synchronizations” that standard formulation is unable to detect since the Preferred Frame is considered superfluous. The restricted Principle of Relativity emerge since exist two clocks in every coordinate and when we refer two simultaneous events, we mean that we are using two synchronized clocks and not two desynchronized clocks, marking the same number. The non-equivalence of the frames emerge with physical meaning through the analysis of the Lorentz-Fitzgerald contraction and Larmor time dilation mathematical expressions.