OC_Hespera thanks for the reply.
By your example shouldn’t a 2000 rank technically be matches with anyone 1400-9999+??
If a 9999+ can match with a 1501 then a 1501 can match with a 9999+.
The wording should be once you reach Z palace you can match with anyone in Z palace. The 2100 requirement is pointless it just mean that you can ONLY match with Z palace players.