ok, I can see that you have to be able to play legato and that it is the base of many strokes. But I still can't see the legato spiccato connection.
Both techniques have a totally different feel.
please read my #1 rule (and the other ones as well)
I don't think the rest can be done in writing, you need to experiment and work with someone so that you can watch the movements that perhaps cannot be explained with words, also then the teacher will be able to see your movements