Brane observers executing appropriate motion through a partially compactified
Lorentz invariant bulk spacetime, such as $M_4 \times S^1$, can send signals
along the brane that are instantaneous or even travel backward in time.
Nevertheless, causality in the braneworld remains intact. We establish these
results, which follow from superluminal signal propagation reported in
arXiv:2206.13590, through classical analysis and then extend our reasoning by
examining quantum mechanical microcausality. One implication is the capacity
for real time communication across arbitrarily large distances.
