If the scene is motionless and unchanging...
TCQ photographers can make “a single uninterrupted exposure” of any length (as per the first part of Q5).
But if the scene has movement in it...
TCQ photographers may face limits to the length of that “single uninterrupted exposure.”
Why are there limits when there is movement in the scene?
It’s all about not deceiving the viewer.
In a TCQ photograph, objects cannot be “invisible” or “unrecognizably blurred” if they are not “invisible” or “unrecognizably blurred” when photographed using a typical device’s automatic-exposure settings (examples include “walking people” or “moving cars in a city scene”).
The key is applying the “motarri” principle, as stipulated in Q5 and Q7 of the Trust Checklist.
More on the motarri principle