Question about iceland format

right now 3 teams have auto qualed to playoffs, with a fourth being BR/LATAM

how will this slot be determined? Will kru and Loud go against eachother or will they just go upon previous matches?

if Nip quals, Loud go through
if Leviatan qual, Kru go through

the winner of levi vs NIP will determine which region would take the last playoffs spot. if levi wins, kru takes the spot. if NIP wins, LOUD will take it instead