After two seasons of playing therapist Gabby on Shrinking, Jessica Williams has learned to take notes.

While filming the dramedy’s Season 2 finale, now streaming on Apple TV+, the Emmy nominee had a front row seat for “some of the best acting I’ve ever seen in my life” from co-star Harrison Ford as mentor and fellow therapist Paul.

“There’s this scene where Paul decides he’s not gonna take his Parkinson’s medication so much anymore because it loses its effectiveness,” she told Deadline. “Harrison showed up that day and had really worked the s— out of that scene. We were weeping, like, the camera crew was weeping. I’m getting misty thinking about it, but it was some of the most phenomenal acting I’ve ever seen in my life and that I’ve ever had the privilege to see in person, and I could not believe that monologue.