By Matt Hladik Tonight is Amazon Prime’s inaugural NFL regular season broadcast, which has understandably caused some confusion. The game is not being shown on any standard cable channel. In order to watch, you have to stream on Amazon Prime Video or have access to it on DIRECTV. Unsurprisingly, there are a ton of people unsure how to watch the Chiefs take on the Chargers. There are also plenty of jokes flying around Twitter about dads, moms and grandparents being unable to find the game. Take a look. Anyone who was unprepared for tonight’s broadcast has no excuses moving forward. Every single…