The "Succession" star gave a fiery Logan Roy-esque speech at a London rally in support of the SAG-AFTRA and WGA strikes.
The beloved curmudgeon said he had been "jealous" of Streep, prompting a possibly misguided compliment about her acting talent.
He also told the BBC that he has a complaint about that key episode.
The star described his extraordinary measures to keep paparazzi from guessing about filming for a pivotal scene.
Most fans of the hit HBO show didn't see this coming, and even the actor was caught a little off guard.
The star of the HBO hit channeled his on-screen counterpart, Logan Roy, in a blunt admission.
The “Succession” actor recounted his nuptials on “Live with Kelly and Ryan,” saying the details of that day have been “stuck in my brain” ever since.
“Just f*cking do it!" Cox instructs in the video. "Act!"
"It would be much easier if he didn’t love his children," the actor said of the billionaire media mogul he portrays in the hit HBO show.
The “Succession” star argued that Markle “clearly” had “ambitions” to marry into the royal family.