Frey said there were never any serious problems between him and Henley.
"We just grew tired together," he said. "That's the way it played out. The Eagles became such a burden. I think Don and I just sort of succumbed to the weight that we felt after 'Hotel California' went through the roof. You know, it could have ended there. Instead for us, we were able to, as Don said, have a second act."
Since the Eagles famously said they wouldn't reform "until hell freezes over," their reunion was cheekily called the "Hell Freezes Over Tour."
"The time off did everyone good," Frey said. "I know when I came back to play in the band in 1994 I was a much better musician and I was a much more confident player and singer. I was more grounded as a person. When we all came back together, we had all sort of grown up, dragged kicking and screaming into adulthood."
The meat of the Eagles' story is in the documentary's first part, but the band didn't want their "second act" shortchanged, Gibney said. The Eagles are less a creative force now than a business colossus that tours all around the world. The most interesting segment in the second part is the journey of Joe Walsh, the former court jester who learned hotel room trashing from that art's Picasso, Keith Moon. For his survival, as a person and an Eagle, Walsh needed to clean himself up and has succeeded.
After devoting much of its attention to the documentary the past year or so, the Eagles are mulling the future, perhaps incorporating some of the film's visual elements into a live show that revisits some songs that haven't gotten much attention lately, Frey said.
"What happened when we got back together is we realized that the Eagles is this mothership that makes everybody's life better," he said. "I think we all understand what a unique position we're in, individually and collectively, and it's nice to be able to keep the Eagles going. We always say that as long as we're able to go out onstage physically and perform at a high level, we'll continue to perform.
"Obviously it's not going to last forever," he said. "But I think we still have a few more miles."
EDITOR'S NOTE — David Bauder can be reached at dbauder(at)ap.org or on Twitter (at)dbauder.