Teams will snipe any incoming Skype for Business IMs that you receive before you can accept the toast on your real Lync client, which is always fun... It's eit

Teams will snipe any incoming Skype for Business IMs that you receive before you can accept the toast on your real Lync client, which is always fun... It's either got the Skype for Business Web SDK or raw UCWA jammed in there to log you into Skype, deal with presence, and handle messaging.