The final preparations and run-up to the live performance was all a bit of a scramble and then I went on holiday, so this is being written in retrospect. I will, however, report on events as they unfurled to keep a clear narrative line.
It took longer than anticipated to get all four screens working but we got there in the end. We had to hire an additional vision mixer and a signal booster before we could calibrate the projectors. I never want to see an HDMI connector again!