The concept of a timeless dimension or a dimension outside of time is highly speculative and not currently supported by mainstream physics. In our current understanding, time is a fundamental aspect of the universe, and particles and objects exist within the framework of spacetime.
Quantum strange behavior, such as superposition and entanglement, arises from the principles of quantum mechanics, which govern the behavior of particles at the microscopic scale. These phenomena cannot be explained by classical physics and introduce probabilistic behavior and non-local correlations.
Superposition allows particles to exist in multiple states simultaneously until they are observed or measured, at which point they "collapse" into a definite state. Entanglement refers to the phenomenon where two or more particles become correlated in such a way that the state of one particle is intrinsically linked to the state of the others, even when separated by large distances.
These quantum phenomena are well-described within the framework of quantum mechanics, and their origins and consequences are actively studied by physicists. However, these effects are not typically attributed to particles traveling to timeless dimensions or existing twice in the same time.
It's important to note that speculative ideas about timeless dimensions or alternative explanations for quantum phenomena exist, but they are currently speculative and lack experimental support. The nature of quantum strange behavior continues to be an area of active research and investigation in physics.