No, because the AT Protocol is not designed for interoperability, but rather for entrenching the silo owned by the main node (BlueSky) whilst giving the illusion of being decentralised. It’s to decentralised social media what Microsoft’s OOXML file format (tl;dr: a memory dump of Microsoft Word’s internal data structures encoded in XML, and useless to anything that’s not Microsoft Word or a very precise emulation thereof) is to open document formats.