  The Parker Solar Probe (PSP) and Solar Orbiter (SolO) missions opened a new
observational window in the inner heliosphere, which is finally accessible to
direct measurements. On September 05, 2022, a coronal mass ejection
(CME)-driven interplanetary (IP) shock has been observed as close as 0.07 au by
PSP. The CME then reached SolO, which was well radially-aligned at 0.7 au, thus
providing us with the opportunity to study the shock properties at so different
heliocentric distances. We characterize the shock, investigate its typical
parameters and compare its small-scale features at both locations. Using the
PSP observations, we investigate how magnetic switchbacks and ion cyclotron
waves are processed upon shock crossing. We find that switchbacks preserve
their V--B correlation while compressed upon the shock passage, and that the
signature of ion cyclotron waves disappears downstream of the shock. By
contrast, the SolO observations reveal a very structured shock transition, with
a population of shock-accelerated protons of up to about 2 MeV, showing
irregularities in the shock downstream, which we correlate with solar wind
structures propagating across the shock. At SolO, we also report the presence
of low-energy ($\sim$ 100 eV) electrons scattering due to upstream shocklets.
This study elucidates how the local features of IP shocks and their
environments can be very different as they propagate through the heliosphere.
