Not relevant to this topic, only to the ^ reply above.
hey @psychobunny, would you consider, in the WP-NBB-PLUGIN a way to "Augment" the NodeBB.Search result page, (probably below the NodeBB Results), so it can use the same "query" to search WP's database and display the result on the same page?
This way one would use a single search form to search both, NodeBB forum and WP site.
I guess it's not too hard to do as a nodebb-plugin if the NodeBB's search.tpl can guarantee to the existence of either a parent element to appendTo or an element to overwrite, along with a locked "selector" to get the "query value".
I guess the point of my reply if you consider having your WP-NBB-Plugin to have that option, "merge" search or not, and it should be able to override or augment WP-Search form.
I'd be interested to take a look at it even if in development mode unless it's confidential.