We need to connect San switch in different DC Since we have interconnectivity between DC through Cisco nexus core switch can we connect San switch eport to Cisco core switch on access port and span it across DC.

In attached scenario leaf 103 continues to forward multicast to spine 202 over another ftag tree where spine 202 is the root.Could someone explain whats the need to do so as spine 201 would have already sent multicast frame to all leaf switches.Also ...