This example (https://github.com/hyperlight-dev/hyperlight-wasm-sockets-ex...) demonstrates starting a sandbox and loading a component. You could imagine you'd write an app that starts and stops any number of components in their own sandboxes.

As for executing a tree of connected components, in the current state of Hyperlight-Wasm you'd probably want to take a collection of components and compose them together using something like https://github.com/bytecodealliance/wac to create a final component composed together from multiple components.