In reviewing a suggested edit I made some further improvements and then realised moments later I'd made an incorrect assumption that the OP was using a pair of microcontrollers, considering it was a CAN bus it could have involved more than two devices so I removed my reference to a pair. It is edit three on the following revision list:
https://electronics.stackexchange.com/posts/64220/revisions
Apart from my misspelling of 'possiblly' in the edit summary it looks a bit odd now because my first edit has been rolled into the second but using the second edit summary where I'd just removed a "pair of" microcontrollers. No big deal but I wondered for future reference how long you get to re-edit a post without it appearing as a distinct edit?