1. As of now we don't have specific multi-connection support added, but there will be more additions to the Channel Sounding features in the next version of NCS (v3.0.0) coming soon.
2. The device name can be added to the advertisement packet with BT_DATA_NAME_COMPLETE. Please check out the DevAcademy course on Bluetooth Low Energy available here.
3. Yes, it should be able to filter for specific devices, either with device name or by UUID filterting.
