I'm new here, in fact it was this very post which came up on a search which made me register at least for 25 days
Kudos to you for your experiment - nicely executed.
My interest is in the timings for the communication flashes, so if you would have had a 5th strobe in multiflash mode set to 100Hz it might have given a crude timebase?
Anyway my interest stems from an idea to increase CLS range/envelope by using an IR gelled strobe (connected to an optical slave) to act as a sort of signal repeater (or indeed a sort of CLS hub) for the main SBs. If the CLS data comm rate is around 100Hz or less it just may be possible?