Yes, even with poor memory, 5.5 for the larger aircraft. However, local interpretations were made.
The specific certification requirement was for a precision steep approach applied to a straight-in landing and flare onto a runway.
Some airfield approaches might enable a two stage flare from an offset steep approach or flight path adjustment before landing. I don’t recall Sion, but Lugano at 4.5 deg was flyable without any mods due to its non-precision ‘airfield’ approach path, and similarly at Aspen.