Yes! Dortmund Westfahlen Halle. Stages, one at each end of the hall so only 15 minutes between bands .
Correction ,Gers was not playing. I saw so many guitar players that night I must have imagined the trio.
If it was the Piece of Mind tour, all but (I think) one song is on that DVD that I posted (obviously, just Maiden...not all those other acts). Unfortunately, the missing track is Iron Maiden, which was when Eddie came out...and that particular show, they killed him!! Beat the crap out of him...stomped on him....ripped the top of his head off....fun stuff!! The good news is that footage does appear on another release (12 Wasted Years), which is included in History of IM part 3: Maiden England.