My impression is, there are still some unexplained phenomenons concerning CAN and Klipper.
koconnor just wrote a utility to parse Klipper messages in a candump capture Comparing master...work-parsecandump-20230417 · Klipper3d/klipper · GitHub
First you need a candump.log CANBUS Communication timeout while homing Z - #12 by koconnor
To get the candump utility you need to install can-utils Debian -- Details of package can-utils in sid
Good luck, hcet14