I did a little research and it seems that it depends more on the furniture (mobile phone) than on the headphones. There should be nothing in the way of the headphones. They simply receive the audio stream (or other data) that is sent from the mobile. If the Möbli supports "Dual Audio" (or a similar name, depending on the manufacturer), then this should be possible. My Cat S62 Pro does not have this feature as far as I could see. Samsung devices should support this.

Which size? I’d reach out to JBL support.

Noice calcelling is relatively good, you can also switch it off. I am really satisfied.

Bicycle not but jogging, noise suppression is very good. Would still advise against buying. The left headphone always breaks down and becomes very quiet, already replaced 3 times and received new ones. No improvement. Do not buy.

I would say no because they stick out quite far. Secondly, they close off very well against ambient noise, so you wouldn't hear anything from the traffic.