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a knot is still a thread. It can still proceed as normal.
Also, tangled knots happen in space. What kind of space can time get tangled within?
Now that's another fun question! It also makes me wonder, how would space behave in tangly time?
Would the space in which time gets tangled be primarily around extreme phenomena like black holes, or the very beginnings of the universe (or a universe, if one wants to get into multiverse angles)?
You can think of space-time as a 4D object. If it’s a flat plane (more correctly, a hyperplane), it could be infinitely big. If it’s s sphere or a torus, it would be finite. It could also be an infinitely long pipe.
Either way, the shape doesn’t have to be perfectly smooth. A plane can have wrinkles, where two points touch. Likewise, a pipe can have knots and bends. All of this would happen in 4D space, so our 3D brains can’t really visualize any of it.