Xbox player. I disconnected (I personally suspect it was a ddos) during my match and immediately joined back, we ended up playing the rest of the game and won. My SR never came back after the game.
If you take more than two minutes to reconnect, you are still disqualified due to being gone too long. Details of this policy can be found here:
Note, the Xbox DDoS really shouldn’t be an issue in this day or age unless you are on a older system and have not changed your IP address to your home internet connection in years.