I do a lot of ETL over the years and watched the video and read the intro. I apologize but I haven't a chance to read through the full documentation. My question is, a lot of data I pull are relational and hierarchical, how would I pass variables along to related connectors? And is there a way to wait for a parent connection to finish before the child connector runs? I've build many ETL over the years and it's not easy to keep up with the changes. The bottleneck was always the engineering adapting to the changing schema.