Merge two subgraphs into a node of the parent graph

[suryabhosaleoptimeleon]

I have two subgraphs and I want to get their results into a node of the parent graph. I require both the subgraphs to be triggered in parallel.

For example, subgraph A has multiple nodes that has a human feedback function on most nodes, subgraph B has no interruption. I am able to successfully save these updates for sub graph A directly in the state of the subgraph. But when this graph ends I am not able to move forward and trigger the node in the parent that I want these two subgraphs to merge at. The "next" and "tasks" of the state is empty at the end of subgraph A.

How can I move ahead and get to the node of the parent graph where these merge.