Glenn Closeis shedding light on the special friendship between the lateChristopher ReeveandRobin Williams.

In the documentarySuper/Man: The Christopher Reeve Story, which had its world premiere at the 2024Sundance Film FestivalJan. 21 in Park City, Utah, Close is one of several interviewees looking back at the life and legacy of Reeve.

“I always felt that if Chris was still around, Robin would still be alive,”says Close in the film.

Roy Rochlin/Getty Images; Jim Smeal/Ron Galella Collection via Getty Images; Caroline Schiff/Getty Images

Glenn Close Says Robin Williams Would Still Be Alive if Christopher Reeve Had Lived

Reevedied in 2004from cardiac arrest at age 52, nine years after a spinal cord injury from a horseback riding accident left him paralyzed, in a wheelchair and dependent on a ventilator to breathe.

Close, 76, who starred with Williams in 1982’sThe World According to Garp, first said she was “convinced” theMrs. Doubtfirestarwould still be aliveif Reeve were too in 2017, at theChristopher & Dana Reeve Foundation’s annual “A Magical Evening” Gala.

“Their friendship, their connection, is the stuff of legend. It not only endured, but became a life-giving force sustaining them both,” Close said at the time, asET Newsreported.

(Left to right:) Christopher Reeve and Robin Williams at the 1979 People’s Choice Awards.Fotos International/Frank Edwards/Getty Images

Glenn Close Says Robin Williams Would Still Be Alive if Christopher Reeve Had Lived

Fotos International/Frank Edwards/Getty Images

“On Friday evenings, Chris would literally swoop in, piloting his own plane, scoop Robin up, and away they would fly for the weekend,” she added, recalling the summer she and Williams filmedGarp. “On Sunday, late afternoon, Chris would swoop back in and deliver Robin back — I have to say a little worse for wear.”

Close said she saw Reeve and Williams as “on top of the world” throughout their decades-long friendship. “They were living the kind of fast and crazy life that our business can hand to you if you become a wildly famous phenomenon, practically overnight."

Christopher Reeve in “Super/Man: The Christopher Reeve Story”.Herb Ritts / AUGUST

Christopher Reeve

Herb Ritts / AUGUST

Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.

Super/Man: The Christopher Reeve Storyincludes intimate interviews with Reeve’s three childrenMatthew,AlexandraandWill— in attendance at the Sundance premiere — and wife Dana, whodied in 2006from lung cancer. Their children all serve on the board of directors for the Christopher & Dana Reeve Foundation, which is dedicated to researching a cure for spinal cord injuries.

While he struggled in the hospital, the doc also reveals in detail, Reeve told his wife, “Maybe we should let me go.”

She refused to let him die, responding, “You’re still you and I love you.”

(Left to right:) Matthew Reeve, Alexandra Reeve Givens and William Reeve at the 2024 Sundance Film Festival.Michael Loccisano/Getty

Matthew Reeve, Alexandra Reeve Givens and William Reeve attend the “Super/Man: The Christopher Reeve Story” Premiere during the 2024 Sundance Film Festival.

Michael Loccisano/Getty

“I came in as a Russian proctologist, put on a glove and said, ‘We’re going to have to examine this thing,’” the late actorrecalls.

source: people.com