2 products on pallet on 1 is being lifted off

I have a pallet with to different pieces of a product on it, i need to simulate each box being moved of the pallet to a table then both pieces of the product connecting together. I have tried to simulate this, however; it is only picking up boxes of one product. Can anyone assist me?
Video below shows the issue

Issue was solved, well done differently. Originally products were placed in a different step in the process assemblies, changed it so both products were in the one step and it is now working as i need it to.