I’ve made a puzzle or two before… even with a perfectly aligned passthrough, I think it would still be easier to just break the puzzle up. I’d be very surprised if the passthrough software automatically broke up vector designs - maybe it will… but, I’d be surprised.
Whether it does or doesn’t… the bigger question in my mind is how are you going to get all of those pieces out? Push them through the passthrough? Pick them up off the crumbtray and transfer them to a holding container? I’d be very leery of doing both. Puzzles pieces like to jump. And bounce. And hide under things when they do those previously mentioned things. Maybe they could all be pushed through the back passthrough slot, but I’d say the chances of pieces getting lost are fairly good.