The loads wernt particularly amazing on the CDG Gill flights, ut they certainly attracted interest. Id have to say yields were supposidly quite high, if you look at the crudest evidence of good yields, most pax were the laptop brigade, the route had little effect on the KLM service (which at the time increased to 6xdaily) so there was demand. It lasted 18 months, i think initialy shared with MME, the MME leg was dropped and was solely HUY to CDG.
BE were at the time a big franchise operator for A/F but as far as i could see they didnt have the capacity employ routes from HUY. There is, afterall, always somewhere more significant...