Glad you're loving the game 🙂 I have no idea what you may have seen since I definitely haven't made a Will & Connor sex scene for the game yet. What you can download here is the full version.
I did make a Patreon gallery for Halloween a few years back that has a threesome with Will, Matt, & Connor. That's the only thing I can think of that you may have come across, but considering they were all dressed like cyborgs, I think it would have been obvious that wasn't in the game, haha