The group's solution was to fly back and forth between Dublin and their concert destinations for about ten days to finish recording and mixing at night and during their off-days. Clayton called the process "about the craziest thing you could do to yourself", while Mullen said of it, "It was mad, but it was mad good, as opposed to mad bad." McGuinness later said the band had nearly wrecked themselves in the process. The group simultaneously used three separate rooms at Windmill Lane to mix, overdub, and edit. Adams said the hectic approach meant "there was never anybody sitting around waiting or doing nothing". Flood called the period one of "absolute lunacy". Eschewing console automation, the engineers adopted a "live performance" attitude to mixing, based on past experiences with Lanois. The band and production crew sat in on the mixing and offered encouragement, creating, as Adams put it, "a kind of cheerleader thing. It all induces a nervous energy in you and creates a lot of pressure, and gives the whole thing a performance feel." Flood had to depart about a week prior to the completion of mixing due to prior obligations to produce Nine Inch Nails in Los Angeles. The recording of "Zooropa" concluded on 14 May 1993.