windows – ffmpeg: dshow, use same input device

Is there a way to use the same input device on 2 ffmpeg/ffplay instances?

Something like this:

ffplay.exe -f dshow -framerate 30 -i video="MiraBox Capture" -window_title View1

and this:

ffplay.exe -f dshow -framerate 30 -i video="MiraBox Capture" -window_title View2

Reported error is:

Could not run graph (sometimes caused by a device already in use by other application)
video=MiraBox Capture: I/O error

and at this page I read this:

Multiple devices may be opened as separate inputs, but they may also
be opened on the same input, which should improve synchronism between
them.

without no reference on what I’m trying to achieve