It isn't easy to give a specific limit as to how many chains can be connected to the Posschain network. All significant public chains and Posschain-linked chains can be connected to the network. Posschain's optimized and scalable protocol allows for several hundred, if not thousands, chain connections to be made to its framework. Future advancements to the protocol may even increase the upper bound on the limit of connected chains as Posschain aims to become the internet of blockchains.