Queen Elizabeth II’s heartbreaking deathis a profoundly personal time for the royal family.

I will honor her memory by supporting my father, The King, in every way I can."

But will he also support his brother throughout this grief-ridden time?

Prince William, Prince Harry, Princess Kate Middleton, and Meghan Markle

Or will this historic moment serve as another nail in the coffin of their relationship?

So far, we aren’t quite sure.

While there was plenty of interaction with the crowd, there was little said between the pairs.

Prince William, Kate Middleton, Prince Harry, and Meghan Markle outside Windsor

They know how they’re expected to act.

Prince William, Prince Harry, Kate Middleton, and Meghan Markle outside of Windsor Castle