They did but I believe they did primarily because the minds of the Chelsea players and manager were in a state of apathy because of the perception that they didn't have enough players brought in and Matic was potentially sold from under Conte's nose and without his approval, he has possibly made that clear behind closed doors etc.and become a bit of them and us syndrome between the team and the board.
It could all be bowlox of course but I suspect a point was being made, whether concsciously intended or not. The subs bench was a pointer too.