Can Keybow see host's keyboard events?


I checked this forum, the tutorial and the pimoroni/keybow-firmware issues on GitHub, but found nothing that quite matches my question:

Can a Keybow monitor keypresses coming from the host keyboard? I would like to record new macros live (and store them on mSD for persistence), but it is unclear to me whether the Keybow can even see the host’s keypress events.
There was a discussion on GitHub about a possible “USB backchannel”, and the commit history mentions some serial port support, but I am not at all sure if these 2 are even related.

Thanks in advance!