WARNING! This article contains SPOILERS for The Morning Show season 3, episode 6!The Morning Show previously teased that Stella and Paul already knew each other before he joined the series in season 3, with the depth of their history together finally being revealed in episode 6. The Morning Show season 3 introduced new multiple characters, including Paul Marks, a tech mogul played by Jon Hamm, who showed interest in buying UBA, where Stella is the president of the news division. Stella was in his shoes just a season ago as the newcomer to UBA and the world of The Morning Show, but their past together began prior to the events of season 2.
https://screenrant.com/how-stella-knows-paul-marks-before-the-morning-show-season-3/