The question is above, thanks in advance
No, just that you (not) participate. But not via which device
No. You can only see that he or she is basically attending a meeting.
I do not think so. You can also talk on your cell phone, right? But most of the time you notice it anyway
You can only see whether you are taking part or not - "nobody" can see it and know except you on which device you are doing it
No, you don't see that. It will only be seen whether you participate.