lost due to disconnection
You can still get disconnected from the Live server process, even if you are connected to the internet in general.
There are multiple things that can cause issues, but there are some things that can be done to minimize issues.
https://www.chess.com/blog/News/how-to-adjust-your-live-chess-connection
I've lost that way too, more than a handful. But I've also won when the opponent mysteriously loses connection, even though the opponent is in a winning position. Maybe it just seems that I have lost more than I have won in this arbitrary fashion. Either way it is somewhat annoying. Oh well, hardly anything is perfect.
If you need help, please contact our Help and Support team.