Search & Discovery app - use related items as metafield

[ccsachs]

Goal: add Related Products from Search & Discovery app into collection block

The them we are using provides a featured collection block. We can use this to select any existing collection, or multiple collections. The viewer can then click on the name of that collection to see a row of products from that collection. This nicely tabbed block can also pull from dynamic resources. However, there is no way that I know of to pull related items or even recently viewed items into this block. Is there a way to create a metafield for the Related Products that are set up in this app and then use that to appear as a collection? 
The theme is Concept. But I am having issues trying to do this with Prestige an other themes as well.