[RascalPuff]

Timelessness is said to result with absence of all motion - such as in a (so far unobserved, unachieved) condition of 'Absolute Zero' (-273o C. -459o F.)

Timelessness is also said to result if and when any physical entity moves at the speed of light (C = 186,282 mps).

In this consideration it seems that two opposites - the absence of motion (at microcosmic infinity), and ultimate motion at the speed of light (macrocosmic infinity) - equal timelessness.

It is also noteworthy, until further notice, that neither of these two extreme conditions have been attained in experimental physics. That is to say, cyclotron speeds approach but do not equal that of light, and cryogenic experiments (Bose-Einstein condensations; etc) approach but do not equal that of Absolute Zero. Opposite ends of the motion spectrum establish 'timelessness' (cessation of all motion): established by maximum motion and zero motion.
That these two antithetical considerations of maximum and minimum motion should both result in timelessness, draws attention to itself. I call it the 'motion spectrum enigma', and submit that there are yet to be recognized solutions here - solutions which may evoke more advanced questions and answers.
May the Reader please draw and express their own conclusions.