i think it's not being taken advantage of, rather than ability:

https://github.com/0intro/plan9/blob/7524062cfa4689019a4ed6fc22500ec209522ef0/sys/src/cmd/fcp.c


On Tue, Dec 12, 2017 at 11:38 AM Steven Stallion <sstallion@gmail.com>
wrote:

> I suspect the main
> culprit is the fact that 9p doesn't support multiple outstanding.
>