>>49209790there is no chaining in SWSH (unless you're fishing), you don't have to worry about encountering other mons
knocking out or catching the same species makes it more likely to appear Brilliant (the ones that glow like pic related)
Brilliant appearance odds max out at 3% after 100 knockouts/captures, but shiny odds for Brilliant pokemon max out after 500
and grab the shiny charm if you haven't already
