To imitate the technique that Cleo Hogan champions, you would need a set up that had one entrance into the nuc and a tunnel from the nuc to the main hive. What you have created is similar to a typical trapout scenerio with only foragers collecting in the nuc. Cleo's technique uses uncapped brood to attract house bees throught the tunnel as well as the queen.
He says he can get the queen out of the tree 100% of the time and 50% out of a house. If you want to get the queen out of a bee tree, you have to check the super several times a day until you find her in the super. He mainly uses his technique to rob the bee tree of all ages of bees 3 times a year to use as starts but leaves the queen in the tree so he can continue to rob it.
I have found two bee trees with low entrances. I have put a 3 inch metal collar around the entrances and now am waiting for warm weather and dandelion bloom before putting the super up against the metal collar. The I have to decide whether to just remove bees or bees with a queen knowing the hive may not survive. Our cold rainy spring weather makes raising queens difficult.