Yes, received access and sharing the block works the same as sharing a table or base. Worked fine for the map block. We ended up sharing the entire base in our use case and didn’t rely on only sharing a block.

+1 Struggling with the same issue.

Apparently there’s a beta feature you can sign up for that will allow for sharing of blocks. I just signed up myself - https://airtable.com/shrLK2dGvhx46S6bU .