Continuous ending game disconnections!

For example on this game -> (lichess.org/AaWdiutB#120) I got disconnected for 2 seconds. That was the time I had to checkmate in one! This happens all the time and ONLY at the ending part of the games. Is this a joke? Has anyone the authority to disconnect me for that short time or this is a bug of LICHESS? Thanks!

If it happens all the time, then how did u get such nice bullet and ultrabullet ratings?

@SwApNeEl1 thanks for your try but if you think that such rating can prevent disconnections you just launched a new technological networking era.

@Toscani you spent so much time completely out of the topic. Anyway thanks. I'm not talking about ALL disconnections. I am talking about those in the last seconds. In some of them I restore my temper and continue because as I said it is a very small disconnection that occurs. In some others it's too late coz the game has ended. It feels like a process going on there. I really don't know. I repeat "THE SMALL DISCONNECTIONS APEAR AT THE END AND ONLY THERE". All other disconnection may happen in any other part of the game. Strange eh? I'm sending the topic here in case some Lichess stuff eyes see it and can explain or search. I used feedback once and my topic closed on the first answer. Thanks again.

@Toscani thanks again, I use a mac most of the time plus I worked as a network administrator for a long time including in a big international Co and I know how to stabilise any connection from my side. I also know how to read connection log files. Your information is useful for any regular user but not for me. Thanks anyway.