  We investigate the statistics of the number of time slots $T$ that it takes a
packet to travel through a chain of wireless relays. Derivations are performed
assuming an interference model for which interference possesses spatiotemporal
dependency properties. When using this model, results are harder to arrive at
analytically, but they are more realistic than the ones obtained in many
related works that are based on independent interference models.
  First, we present a method for calculating the distribution of $T$. As the
required computations are extensive, we also obtain simple expressions for the
expected value $\mathrm{E} [T]$ and variance $\mathrm{var} [T]$. Finally, we
calculate the asymptotic limit of the average speed of the packet. Our
numerical results show that spatiotemporal dependence has a significant impact
on the statistics of the travel time $T$. In particular, we show that, with
respect to the independent interference case, $\mathrm{E} [T]$ and
$\mathrm{var} [T]$ increase, whereas the packet speed decreases.
