multiple connections per block device with NBD?

[Sam]

Hello,

I am wondering whether NBD integration of qemu is able to establish multiple 
connections to remote NBD server for a single block device. nbd-client has this 
option:

-C, --connections
Use num connections to the server, to allow speeding up request handling, at 
the cost of higher resource usage on the server. Use of this option requires 
kernel support available first with Linux 4.9.

I am looking for equivalent functionality in qemu's direct NBD access as 
multiple connections in nbd-client does increase speeds many folds.

Regards,
Sam