Well if you are using a custom coded action, you can always use HubSpot’s API to get any data you need in the action to push out to some other service. I’m not sure you’ll be able to easily pull them into an action via the UI. You could possibly use a deal workflow to set a property on the associated comapny that triggers a company workflow to do other things. This might allow you to use 2 workflows, but it seems better to use a few actions in the deal workflow to fetch data you need.