Hi Mika,
The second one is fixing a reboot time issue reported by Christian that we finally were able to reproduce in the lab. The reason this happened only in Linux is that we enumerate retimers during link bring up and there is certain step missing after the enumeration that leads the link to not come up properly after soft-reboot. This should be fixed with issuing UNSET_INBOUND_SBTX after retimer access and this works in the lab. @Christian, can you check that it solves the issue for you too?
I was told today that the patch solves the issue on the Elitebook! (don't have the hardware here in my office any more...). Thanks for fixing this! Best regards, Christian