Hope this spoiler is fake anyway.
Everybody's enemy
@Jo_Ndule actually has a point
Flying Six doesn't get intimidated by King doesn't look good for King's hype...
Yep, they don't get intimidated at all by Queen too
But it is more understandable for 2 reasons
1. Queen acts way less serious and more carefree than how King so far.
King is more cold and scary
2. In general, Queen is ranked lower than King, so King is supposed to be stronger than Queen
But even Jack the Calamity (who > any Flying Six individually), who acted like no compromize bastard in Zou, acted like a total good boy in front of these two.
Probably Jack has witnessed the real strength of King and Queen himself and began to respect them, while those Flying Clowns haven't seen the real strength of King / Queen so acted like no respect punks.