quest \"Matters of national importance\" (SPOILERS! Second act) (The Witcher 3: Wild Hunt)

I just completed this quest, let Philippa kill Radovid. After this event, he did not allow Dijkstra to deal with Roche and was forced to kill him, which is also not very pleasant. I remembered that before that, when completing the main plot, you could beat him and break his leg, but I preferred to share the information so that I fell behind. What if you still pile on him right away? Has anyone tried it? Will the quest "Matters of State Importance" appear then? Will Dijkstra betray in this case?