Justin K. Aller/Getty ImagesNetflix didn't crash when it streamed two NFL games on Christmas.Even better for the NFL and Netflix: The streaming-only games got audiences that were only a bit smaller than a TV game.Streaming live sports used to be a novelty. Not anymore.Netflix passed two tests on Wednesday when it streamed live NFL football games for the first time in its history.First: Netflix managed to stream the games around the world without widespread tech foul-ups that plagued its Mike Tyson-Jake Paul boxing exhibition/stunt last month.Second: Netflix managed to attract the kind of audience for the games that you'd expect from the NFL, which is continually the most popular thing on conventional TV.The NFL and the streamer say that both of Wednesday's games — the Kansas City Chiefs vs.