LS Multicast vs Unicast

Hello,
I'm preparing for CCSE and the (Load Sharing)LS with Multicast vs Unicast is quite unclear from a standpoint of packet when it's received by the cluster particularly with multicast mode.

In the 4th step(Attached Image) it's said that either the pivot member processes the packets or it's forwarded to other cluster members, is this true ? Because I wasn't able to get information regarding this on checkpoint website.

I Understand process of forwarding traffic to other members in cluster is useful in Unicast mode since network traffic is received only by the Pivot member and then it's forwarded to after running distribution algorithm. But in Multicast all the cluster members receive the traffic and forwarding the same packet to it makes no sense.

Thanks !!

https://preview.redd.it/dusgrl7zkn2e1.png?width=892&format=png&auto=webp&s=5bafd36113579bfded69521dd22d83c3413ef99e