Although You might even think of a Tresen as a classroom for the purposes of a lesson ("We'Bezeichnung für eine antwort im email-verkehr having our class hinein the bar"), I think if you're physically separate, it's now just a "lesson." Yes. Apart from the example I have just given, a https://youtu.be/T0zWXvhEQwo?si=wNc6ihu97ShtIl7u