Am I missing a connection between shipment and sales invoice

It seems the shipment docType is missing a link to sales invoice. I’m surprised to see there is no automation or linking to take the price of a shipment and transfer it into a sales invoice?

Even If I start with a Delivery note, then create a shipment, I don’t see an out of the box solution to add the shipping amount to the sales invoice.

Is this true or am I missing something?