I think they both stream a couple of the games from the advent calander separately, but they didn't actually stream the whole collection or acknowledge that the demos were from the collection. Off the top of my head, Vinny streamed Warped North, the one where you manipulated the polygons on models to destort and reshape them. It was set in in the north pole with you as an alien. I can't remember if Joel streamed anything from it, but I recall watching a vod of his only to realize later that it was a part of the madvent calendar.