Thanks for following up on this topic. I did find a workaround for this issue. Even if it is a bit tedious, it is still feasible. The goal is to share a cloud flow that will automatically start a shared desktop flow using the individual Outlook365 and Sharepointonline connection references of each user. I achieved this by doing the following:
1.) Build the Power Automate Desktop Flow
2.) Build the Power Automate Cloud Flow to start the Desktop Flow
3.) Ask each user for their individual Outlook365 and Sharepointonline connection references ("DisplayName", "InternalId", "LogicalName", "ConnectionName", "ConnectionDisplayName" - To simplify this process I build a two step Power Automate Desktop Flow with the actions "get e-mail (V3)" and "create file" (on Sharepoint) which I sent to every user and asked them to select their individual connection references and then have them send the code including their personal references back to me via copy & paste - takes 2-3 minutes per user.
4.) Open the Power Automate Desktop Flow code in a text editor and search&replace each of the above listed connection references with the individual user's connections references (one separate desktop flow per user)
5.) Edit the Power Automate Cloud Flow, select each user's unique desktop flow, save and export each user's cloud flow.
6.) Share the Power Automate Desktop Flow with each user via make.powerautomate.com
7.) Have each user import their own Power Automate Cloud Flow via make.powerautomate.com
8.) This way the cloud flow will automatically trigger each user's unique desktop flow using their individual connection references and since I have shared each desktop flow with the individual user via make.powerautomate.com, I am still able to monitor the performance for each desktop flow that I built and check for potential errors.
Not the perfect solution and I wish Microsoft would offer an easier solution for this kind of scenario, but at least I found a workaround :).
Regards
Tobias