Too obvious how it was done and quite clumsily done I thought. Why were the people standing with their legs apart and avoiding stepping in the middle of the boxes? Why did both boxes shake so much once the covers were up? Did the spin look realistic?
Examine a lot of tricks and it becomes obvious. But if you are not looking too carefully you’ll miss all that
For Sriram’s benefit, they used twins and secret compartments in the boxes, which I think were very well hidden.