I found some footage at an obscure site and am posting it here for a wider audience.
If you watch the bottom video a few times you might notice that the last two welds take a full six seconds and that all of the other robots are not welding. It might be possible to reduce the cycle time by reversing the order of welds on the rightmost robot. It would be necessary to change the "pounce" position of the top robot so it would be clear of the rightmost robot and still have a short, quick drive to its first weld.
I loved doing this kind of work!