Eloquent belongsToMany query help

Hey everyone, I'm trying to specify a belongsToMany relationship with a setup where with :

Content -> Licenses -> Orgs

So say a simpler approach in my Content model I have these two relationships:

public function licenses_public() {
    return $this->belongsToMany(License::class)
        ->whereDoesntHave('orgs');
}

and

public function licenses_private() {
    return $this->belongsToMany(License::class)
        ->whereHas('orgs', function($query) {
            $query->where('org_id', Auth::user()->org_id);
    });
}

Now I'd like to have a relationship that is a combination of these two, and does essentially this:

public function getLicensesFilteredAttribute() {
    if ($this->licenses_private->count()) {
        return $this->licenses_private;
    }
    return $this->licenses;
}

If ANY licenses have an org that is of the logged in users org_id, ONLY return those, otherwise return all licenses not bound to any orgs.

Is this possible at all at the query level? as a relationship??