Start with the two actual packed constructions, then. Photograph the intended contacts over the seams and print, and ask the tool supplier to explain what it has assessed on each.
Then don't accept a trial that has someone sort the boxes first unless that becomes an actual costed task; our quote comparison changed completely once we counted preparation.
Maya, sorting could be an option, though I agree it can't appear as free help. Thomas needs the mixed case assessed before deciding whether a separate route is worth pricing.
Ask them to show the mixed sequence through placement and release when they report back. Separate successful lifts will not tell you how their proposed station handles the change between cartons.