How to perform screen sharing without establishing audio or video channels


I wish to allow users to connect to a jitsi conference to perform just screen sharing (and view other people’s screen sharing) without necessarily establishing audio or video media. The scenario is that there is already an audio conference (on another conferencing platform) running and participants would launch a jitsi meeting just to do screen sharing while remaining on the audio conference.

Therefore, I would have a participant that has no audio/video channel with the jitsi video bridge but this participant would need to receive streaming (the screenshare) from other participants.

Is it feasible? If so, what are the required code changes or the general idea on how to implement it.