@JRaaschou yes, did you review the workflow action I shared in my previous reply?
You would create a ticket-based workflow, use the ‘Create associations’ workflow action and would then have to find an identifier that is shared between the ticket, the listing, and the deal.
How exactly that would be done depends on your setup. Via additional workflows or sync properties, you would have to make sure that these records have a property where they share a value. For example, this could be a listing name or ID that is also present on the deal and also present on the ticket.