Boss deadlocked [POE2]

- Entered Derelict mansion (with powerful boss)
- area overrun by abyss + rituals (content)
+ additional incubator queen (abyss prefix on waystone)

- entered map - encountered incubator queen & killed it
- explored map and closed only one abyss
- no other mobs on map & no rituals

- only bosses left

- entered room with bosses.

- he playing piano, she dancing near him.

- i`m standing between them ,and nothing happened. cant initiate battle by any means.