>>715626181
In this image, every G1 win overlap between:

1 & 5
2 & 5
3 & 6
4 & 6
5 & 6

Gives +3 affinity (affects the odds of golden inspiration), so you want to finish your run for as many similar G1 wins as possible (I usually go for ~15 G1s in a spark run).

Then on top of that, you cal also get white sparks from G1s you win that give skill inspirations, and there's a spark from the Uma Finale that gives a big speed and stamina boost when it procs, so you want to complete that.