In Case of Dual active or Split brain what actually causes data plane to break. As end device already have Ip resolved either to Virtaul or Physical mac address. Shouldn't existing flows continue even when we have both vPC peer active.Its theres stat...

While creating PEER link for a VPC  is it must to have peer switches  back to back connected or there can be a extended layer 2 connectivity over multiple layer 2 devices in between . If so is there any limitation on number of devices in between.