When Nate enters Rupert's office, the window and the background, the lighting, and Rupert's large chair is reminiscent of Emperor Palpatine's chamber in the Death Star in "Return Of The Jedi".
At about 20:15, Rupert mentions that he was "in St. Bart's with dear friends, the Sacklers" on their "beautiful boat." The Sackler Family are billionaires and founded and owned Purdue Pharma, the company that created and marketed the opiate painkiller, OxyContin.
At the end of the episode, when Henry shows Ted the infinity gauntlet, Ted responds "oh snap!". In the movie Infinity War (2018), Thanos uses the infinity gauntlet to erase half of the galaxy's population - an event that is referred to as "The snap".
In reality, there is no direct flight from London to Kansas City.
Richmond's kit is now manufactured by Nike. The sponsor for the first two seasons is unclear but the Adidas hoodies worn previous will probably disappear.