I am pretty sure you don't need a multi die led with the set up I listed.
There are mutliple contacts on any star board, and you can even wire the direct drive and board drive to the same contacts, that would be the idea.
The flicker will not be a flash, it will loose a bout 20% brightness when it flickers, but would never shut off.
I will use his layout and do a test this coming week, just to be sure, with a video so you see what I mean.
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