And to top the mess that is Gare de Lyon (and other Paris railway stations such as Montparnasse) they have a Hall 3 which serves no purpose except for confusing people even more about how to get to their train... Especially as its almost pitched as some kind of alternative boarding area for Hall 1, but sometimes you have to board from Hall 3 instead of Hall 1, and the escalators just leads up to the.... Hall 1 tracks....

A fellow family member who also flies frequently to/from Corsica and is a platinum member went to Orly recently and had to call me to understand where he was to check-in and then board from as the displays at the airport were as confusing as the signs in the public area themselves... You recall correctly brunos, the signs point to the check-in desks by their numbers (11, 22, 33 etc) and the boarding gates, but not the actual terminal areas (1, 2, 3, 4) and one is left to deduce that the check-in desks mimic the terminal area they have been assigned to...