Meta Box WP_Query array for showing items with a certain relationship

by

Alright so after waking up and actually thinking (lol) it was quite simple and I was way overthinking it.

In piotnet grid you can query a custom wp_query. I added this to the box

array(relationship => [
        //the meta box relationship id
        'id' => 'relationship-between-cpt1&cpt2',
        'from' => get_the_ID(),
    ])

in the preview window on piotnet grid it will look broke but once you put it into a post it works just fine.