We continue to work towards the S4B convergence.
Official roadmap for the convergence: https://skypeandteams.blob.core.windows.net/artefacts/Skype%20for%20Business%20to%20Teams%20Capabilities%20Roadmap.pdf
-WarrenBernd Friedmann commented
The functionality is there. Just initiate a call through teams and it will give you a share menu on the bottom. works for video and just audio too.