I am using the Xfinity stream app on my Amazon Fire Stick and watching Gangs of London. What is the difference between the On Demand and TV Go version of the show. The On Demand version is 76 minutes and the TV GO version is 55 minutes. Is it just shorter because of less commercials. I am watching at home and I chose the TV GO version because it is shorter I just want to make sure it is the full episode.