beIN isn't showing it live in the US because the Madrid game is on at the same time. This is why they need more channel space, Serie A always gets screwed because they think that everyone here only wants to watch La Liga & that Serie A fans don't really exist. They shouldn't have bought the rights to three big leagues if they don't have the means to show them all a fair amount.
I've "complained" to them a few times but I always either got ignored or got an automated response telling me that I can watch such-and-such match delayed, or on the Spanish channel I don't get.