Do Spatial Anchors work over Quest Link with Meta Quest Pro / 2 / 3 ?

I have gotten passthrough to work over Air Link, but spatial anchors only work in an Android build. If they don’t work, then it would be nice to have a list of features that don’t work over Quest Link. Similar to Vive:

I’m currently working with the Shared Scene Sample, so if anyone can get that working over Quest Link I’d love to know how, if it’s even possible.