Paranoia about the bike's provenance is comedic. A bike from CL Hell !
Maybe because I'm sitting in a shop with over 500 bikes on the floor - maybe 30% of which are Cannondales - and there isn't an original box for any of them in the shop. They were built up over the winter to minimize turn-around-time during the spring / summer rush and the boxes have long since hit the recycling bin. The only boxes available in the store for shipping come from special orders or recent shipments to replenish stock. All of which are also built up prior to being sold. Box availability is by reservation and the chances of it even being from the same company are pretty slim.
But obviously the seller presented you with the original invoice and ownership documents when you chatted over coffee and got the whole long drawn out improbable history behind your purchase - so please feel free to dismiss me as a complete moron. Too bad they couldn't help you out with everything else you wanted.