I only saw one cannon ball at a time, so I don't exactly understand how they're joined together. It would also be nice if they came from the cannon itself, instead of just dropping from the sky.
Viewing post in Ball & Chain jam comments
You probably were not using A and D to move the cannon ball left and right. The more polished version has better instructions! Sorry about that. Making a game in 48 hours was hard. XD Heres the link to the new version called Chain Shot https://axgames.itch.io/chain-shot