QnA currently supports the products listed in right-hand pane (more to be added) Better to reach out to subject matter experts in dedicated forums over here.
https://developercommunity.visualstudio.com/spaces/21/index.html
https://developercommunity.visualstudio.com/spaces/22/index.html
https://stackoverflow.com/questions/tagged/tfs
https://stackoverflow.com/questions/tagged/azure-devops
(please don't forget to mark helpful replies as answer)