Hi, According to flight tests, AIR 2S in Europe also receives the GALILEO constellation. A feature not officially declared by DJI in the specs that only report GPS and GLONASS. Confirmation comes from the 28 satellites received and from the comparison with the Mavic 2 PRO.
Air 2S in Europe receives 6-7 more satellites than M2PRO as you can see at 6:49 minutes of this video.