FIRST OFF THIS VIDEO DOES NOT ACTUALLY SHOW JOE COLLASPING. JOE COLLASPES BACK STAGE AFTER HE WALKS OFF. I ALSO DIDN’T CATCH HIM WALKING OFF. YOU CAN ONLY WRITE SO MUCH IN A SUBJECT LINE.
This was the 2nd song and Joe Perry leaves the stage and is taken to hospital after collapsing backstage. You can see Joe at the beginning of the video, his hat on top of Marshall speaker, but later in song disappears.