Thanks for the info Alexis.
I did email ANSA39-45 group but they never replied,
http://ansa39-45.fr/news.htm
perhaps some one else might have better luck than me.
Perhaps if the records of the town(s) or local police could be investigated in an archive, they might hold an answer.
I looked at the Service file of the only RCAF member buried in Dieppe cemetery having been killed on the day of the landings and that indicates that that man was found by locals, and the the local mayoral office made arrangements for his body to be brought to the cemetery. That particular Canadian was to buried by German forces but by local French authorities. This might be the case with Kenedy perhaps. I'll try a question to the CWGC.