I captured the event stream whilst I drew a circle.

$ ssh remarkable ‘cat /dev/input/event0’ > /tmp/pen-input

This ended up being 22,832 bytes. I then cleared the screen and piped some data back over the connection:

$ cat /tmp/pen-input | ssh remarkable ‘cat - > /dev/input/event0’

Nothing. This was understandable, as the data was all sent in one go, and the tablet likely though that my hand was moving at infinity meters per second.