Just a question pertaining to loops, which may have something to do with soleoids: wouldn't putting loops with "waituntil millisecond" control into the TELEOP subvi cause everything above it run slow, because it is already stuck inside a while loop on the Robot Main?

A NI rep told me that loops run only as quickly as the slowest object inside them, wheter waiting for an answer or a timer.
Any facts here, with a diagram?
Thanks