Robert Chapuis, Professor Emeritus at the University of Burgundy, where he worked 18 years after 17 years of his career at the University of Franche-Comté) was undoubtedly best placed to discuss relations between these two provinces/regions in the central eastern part of France. A trial on these two regions is not new, as R. Brunet and F. Claval in 1973 and subsequently P. Claval in 1978 had already gathered them in their regional studies. But the test presented here tries to be...