The interview Elton John did with Clash magazine finally got posted online and here's what he said about Glenn. He was asked about David Bowie's passing and he brought up about how he found out about Bowie and Glenn. I personally didn't know Elton knew Glenn before the Eagles formed.
http://www.clashmusic.com/features/e...erful-new-lifeYou performed a special show at the Wiltern Theater in LA in January, during which you said a few words of tribute to David Bowie, and played a unique version of ‘Space Oddity’. People die every day, but if it’s an artist or someone well known, the reaction on social media can be extensive. The outpouring of grief for Bowie was just unbelievable…
Well, nobody expected it. It was like the day after his album came out. I had no idea. I knew he’d had a heart attack (in 2004), but I had no idea he was sick. I don’t think anybody did. When David [Furnish] phoned me at like three o’ clock in the morning in LA, I thought, ‘Oh my God, what’s the matter?’ I thought there was something wrong with the kids. He said, ‘I’d better let you know that David Bowie has died.’ I had to get up. I couldn’t sleep. I was shocked, I was stunned; it was the element of surprise. This album had just come out and he’d done the video, and he didn’t look ill in the video…
I’ve seen pictures of him from recently, or fairly recently, and he looked fantastic for his age. He looked great. I didn’t know he was ill. It was like, wow. Grab every day as you can. And then Glenn [Frey] died, and I knew Glenn very well from The Eagles, and from before The Eagles… I knew David to start with, but I didn’t really know him towards the end.