Why did Brahim Dias shout "Speak now!" at Simeone?

The Madrid derby is always intense. The match between "Real Madrid" and "Atletico Madrid" in the Champions League Round of 16 yesterday was no exception. One of the heroes of the match was "Real Madrid" midfielder Brahim Dias.
Simeone's words and Brahim's response
Before the match, Atletico head coach Diego Simeone expressed his doubts about Brahim Dias's participation in the game.
"I think they (Real Madrid) will play Modric along with Tchouameni and Camavinga to fill in for Bellingham. I'm not sure Brahim will be brought on," Simeone said.
However, Real's coach Carlo Ancelotti showed faith in the player, and Dias started in the main lineup. He fully justified the coach's trust.
The goal that secured victory and the intense response
Brahim was the author of a crucial goal in the match. After he scored against Atletico, he shouted towards Simeone: “Speak now! Speak now!”
This action, of course, did not go unnoticed by football fans and quickly became a topic of discussion on social media. Many perceived this incident as a response from the player to Simeone's criticisms.
Dias finding his place in "Real"
Brahim Dias had not been able to establish himself as a regular player at the Madrid club for a long time. However, this season he has managed to showcase his skills. Especially, he began to shine in the position that opened up due to Bellingham's injury.
This game in the Madrid derby was not only an important victory for Dias but also a personal validation. There is no doubt that coaches and opponents will pay him more serious attention now.
Simeone did not comment on this situation after the match, but "Atletico" posted a tribute to the player acknowledging his goal on their pages.
The Madrid derby gifted football fans another thrilling scene. Dias's intense response is sure to be remembered for a long time.