Managing sound and video settings during Teams meetings and calls for optimal communication
Hi @Slav Swiatkowski , thank you for posting your question in the Microsoft Q&A forum.
This is expected in a town hall. The Teams Room shows the event's live feed, which is the same single picture remote attendees see, so the content and speaker video arrive already combined.
I couldn't find a setting that splits them across two displays, or a roadmap item for one. The closest is Front-of-room view control for Town Hall, and it only switches the room between attendee view and presenter view. I also tried a quick test town hall in Teams desktop, and the feed stayed one picture in every layout.
You can still adjust the layout. During the event, anyone with production controls can open Customize screen and pick Speaker focused, Content focused or Content only. Speaker focused gives the speaker more space beside the content, though it still won't use the second screen. You can find more details in Manage what attendees see in Microsoft Teams.