It looks like some people in the thread below have figured it out — we actually have this. You can start a chat both ways; the system will automatically recognize if this person is on Skype for Business or on Teams.
Thanks and let me know if you have any questions.
SuphatraDaniel supported this idea ·
An error occurred while saving the commentDaniel commented
This does not function and even if it did, the documented notes say if that person ever opens teams it will never use Skype again.
This is a deal killer in many ways as what if one division adopts but another does not and then a user opens teams and now has to pick which division they want to be allowed to communicate with. Not everyone can go full boat in a on boarding solution but every must have 100% availability to communicate.
Please create the ability to set a default communication app in Office 365 so users can test and go back if needed during the transition.