Automation to Connect Items across boards?

Hi! I have a Hubspot integration to create new items on a contact board and an account board when a new contact or company exist in Hubspot. Is there a way to connect these boards automatically? Because they are related in Hubspot, I know I can get the field informations for item ID associated but I can’t see a way to automate this.

Note: I saw I could pay for third parties to help connect boards but I was hoping to explore free options first.