Off the beaten path, that's all. Should be my middle name maybe.
Yes many bikes use a separate set points for the other cylinder and therefore it can be independently timed. Great idea. I do not know why somebody has not made an after market system like that for our bikes. Maybe it's just a mater of not enough space? It's the only reason I can think of that I've never heard of this being done.
Dual point distributors in V8 cars do work the way I described but it doesn't have anything to do with what you were asking. File this in the round file.
Never memorize something you can look up.