If that's in response to my comment above, in both my experiences at GVA, Silver/Gold passengers tried to board with F/J and were told to wait to one side. (The first time it was me. They were rather rude about it. Despite a sign which listed F/J/S/G/P all together.)

This last time, someone was roaming the gate area prior to boarding to check passports and scribble on the BP; she explicitly told me "they'll call First and Business first, then Silver/Gold/Plat after that." Which was strictly true, although she neglected to mention that "anyone with children" was in between F/J and S/G/P.